proportional
C1Formal / Technical
Definition
Meaning
Having a constant relationship in size, amount, or degree between two things; corresponding.
Relating to or based on proportion; forming a relationship with something else such that one quantity changes according to another.
Linguistics
Semantic Notes
Often implies a direct, mathematical relationship but can be used more loosely for 'corresponding'.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Spelling of related words differs: BrE 'proportionalise', AmE 'proportionalize'.
Connotations
Identical; carries a technical/mathematical connotation in both variants.
Frequency
Slightly higher frequency in AmE due to the common phrase 'proportional representation' in political discourse.
Vocabulary
Collocations
Grammar
Valency Patterns
be proportional to (something)increase/decrease proportional to (something)make (something) proportional to (something)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Proportional representation (PR)”
Usage
Context Usage
Business
A tax system where the rate is proportional to income is often debated.
Academic
The force required is directly proportional to the acceleration.
Everyday
The recipe says the cooking time should be proportional to the weight of the meat.
Technical
The sensor's output voltage is proportional to the applied pressure.
Examples
By Part of Speech
verb
British English
- The new software will proportionalise the data sets automatically.
American English
- The algorithm proportionalizes the values for easier comparison.
adverb
British English
- The funds were distributed proportionally based on need.
American English
- Votes are counted proportionally under this system.
Examples
By CEFR Level
- If you study more, your results will be better. They are proportional.
- The price you pay is proportional to the size of the apartment.
- The electoral system uses proportional representation to ensure all votes count.
- The damping force is directly proportional to the velocity but acts in the opposite direction.
Learning
Memory Aids
Mnemonic
Think: 'portion' in 'proportional' – you get a 'portion' or share that corresponds correctly to the whole.
Conceptual Metaphor
SCALES / BALANCE (things are in correct, corresponding balance).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid using 'proportional' for 'symmetrical' or 'beautifully shaped'. In Russian 'пропорциональный' can mean 'well-proportioned' in an aesthetic sense, but in English it's primarily mathematical/corresponding.
Common Mistakes
- Using 'proportional' without 'to' (Incorrect: 'His effort was proportional his reward.' Correct: '...proportional to his reward.')
- Confusing 'proportional' (adj) with 'proportionate' (adj). They are largely synonymous, but 'proportional' is more common in technical/mathematical contexts.
Practice
Quiz
What is the meaning of 'inversely proportional'?
FAQ
Frequently Asked Questions
They are often interchangeable. 'Proportional' is more common, especially in technical/mathematical contexts (e.g., directly proportional). 'Proportionate' is often preferred in legal or formal contexts relating to justice or fairness (e.g., a proportionate response).
No, 'proportional' is primarily an adjective. The noun form is 'proportion'.
Use the structure '[Subject] + is/are/was/were + proportional + to + [Noun Phrase]'. Example: 'Success is proportional to effort.'
Yes, but it sounds slightly formal. In casual speech, people might say 'depends on' or 'goes up with' instead of 'is proportional to'.
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