DictionaryproportionalIn a matching ratio
adjective

proportional

pruh-POR-shuh-nuhl/prəˈpɔːrʃənl/

Corresponding in size, amount, or degree according to a ratio.

The number of matching weights is proportional to the number of oranges.

Two balanced weighing scales: one has one orange balanced by one brass weight, another two oranges balanced by two identical weights, consistent relation, no numbers.
Etymology

The Latin base concerns a relation between things, not an isolated size or amount. Something proportional therefore corresponds to something else according to a particular ratio or degree.

In context

Learn About Law1:27
reducing the rent proportional to the amount of damage done
Illinois Tenant Rights Explained | Learn About Law

More examples

  • The diagram keeps the parts proportional.
  • The response was not proportional to the problem.
  • The quantities change in proportional amounts.

Forms

proportional

proportion noun — a comparative size or amount

Similar words

corresponding
Corresponding means matching in some relationship; proportional specifically follows a ratio.
commensurate
Commensurate means appropriately matched in degree; proportional can describe an exact mathematical relationship.