All 4 Uses of

proportion
in
Anna Karenina

As for the amusements of bachelor existence, which had provided Vronsky with entertainment on previous tours abroad, they could not be thought of, since the sole attempt of the sort had led to a sudden attack of depression in Anna, quite out of proportion with the cause—a late supper with bachelor friends.†
Part 5

out of proportion = not appropriate in size, amount, or degree

But all profit that is out of proportion to the labor expended is dishonest.†
Part 6 *

Then Levin had driven over himself, and arranged to have the grass cut, partly by hired labor, partly at a payment of a certain proportion of the crop.†
Part 3 *

"Pleased and happy as a brass farthing," he added, stopping to shake hands with a handsome gentleman of the bedchamber of colossal proportions.†
Part 5 *

Definitions:

(1) (proportion as in: the proportion of females)
relative amount, quantity, or collection
The exact meaning of this sense of proportion is subject to its context. For example:
- "The female proportion is 50%." -- percentage or share
- "The proportion of oil to vinegar." -- ratio (quantity of something relative to the quantity of something else)
- "In the survey, the female proportion said..." -- group
(2) (proportion as in: a problem of large proportion)
size or dimension
(3) (proportion as in: respond in proportion)
appropriate in size, amount, or degree