proportionate
adj.adj. having the right size, amount, or importance when compared to something else. If a punishment is proportionate, it fits the crime perfectly.
adj. corresponding in size, degree, or intensity to something else; maintaining a consistent ratio. Often used in legal or mathematical contexts to describe a balanced relationship between two variables.
The punishment should be proportionate to the crime.
The company promised that salary increases would be proportionate to each employee's performance over the last year.
In international law, military action is only considered legitimate if the force used is proportionate to the threat encountered, avoiding unnecessary harm to civilian populations.
Borrowed from Latin prōportiōnātus, see -ate (adjective-forming suffix) and -ate (verb-forming suffix). By surface analysis, proportion + -ate.
Typically followed by the preposition 'to'. Often used predicatively after linking verbs like 'be' or 'remain'.
The tax is proportionate with your income.The tax is proportionate to your income.While 'proportionate with' is occasionally seen, 'proportionate to' is the standard idiomatic collocation in formal English.