Meaning of PROPORTIONAL in English

pro ‧ por ‧ tion ‧ al AC /prəˈpɔːʃ ə nəl $ -ˈpɔːr-/ BrE AmE adjective

[ Word Family: adverb : ↑ proportionally , ↑ proportionately ; adjective : ↑ proportional , ↑ proportionate ; verb : ↑ proportion ; noun : ↑ proportion ]

something that is proportional to something else is in the correct or most suitable relationship to it in size, amount, importance etc OPP disproportionate

proportional to

The punishment should be proportional to the crime.

The fee charged by the realtor is directly proportional to the price of the property.

a proportional increase in costs

—proportionally adverb

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.