If there are 9000 seconds in 2.5 hours, how many hours are there in 13,500 seconds?

If there are 9000 seconds in 2.5 hours, how many hours are there in 13,500 seconds?

Setup a proportion of hours to seconds where h is the number of hours in 13,500 seconds
2.5/9000 = h/13500

Using our proportion calculator we get:
h = 3.75 hours