SAT Math

Ratio and Proportion (SAT)

Solve ratio and proportion problems including simplifying ratios, solving proportions by cross-multiplication, part-to-whole, and scale factor calculations.

Live Calculator · Step-by-Step · SAT Math
Inputs

Finds x in: a/b = c/x

Result
Result
Enter values and calculate.

Step-by-Step Work

Your explanation will appear here.

Visual — Ratio Bar
Put It Into Practice

The calculator shows the steps — a quiz proves you can do them on your own.

Stuck on SAT Math? Get 1-on-1 help

Alexander tutors all math and CS levels — $55/session, free consultation.