Grade 7hard
Ratio and Proportion Quiz
Ratios and proportions show up everywhere in seventh and eighth grade math — scaling recipes, map distances, similar triangles, and percent problems all reduce to setting up a proportion correctly. This quiz tests the core skill of solving for the missing value in a/b = c/d, also known as cross-multiplying. If your student is hesitating on these, the issue is usually setup, not arithmetic — make sure they're matching units consistently across the proportion (girls/boys = girls/boys, not girls/boys = boys/girls).
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All 20 Practice Problems
Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.
- 1.Solve: 2/5 = x/15
- 2.Solve: 4/4 = 12/x
- 3.Solve: 3/7 = x/28
- 4.Solve: 7/5 = 28/x
- 5.Solve: 8/3 = x/18
- 6.Solve: 4/5 = 24/x
- 7.Solve: 3/6 = x/12
- 8.Solve: 2/2 = 4/x
- 9.Solve: 7/2 = x/6
- 10.Solve: 2/8 = 6/x
- 11.Solve: 2/7 = x/42
- 12.Solve: 3/6 = 18/x
- 13.Solve: 4/8 = x/48
- 14.Solve: 7/3 = 42/x
- 15.Solve: 2/2 = x/8
- 16.Solve: 3/2 = 18/x
- 17.Solve: 7/8 = x/48
- 18.Solve: 4/3 = 8/x
- 19.Solve: 7/3 = x/6
- 20.Solve: 3/2 = 9/x
Show answer key
- 1.Solve: 2/5 = x/15 Answer: 6
- 2.Solve: 4/4 = 12/x Answer: 12
- 3.Solve: 3/7 = x/28 Answer: 12
- 4.Solve: 7/5 = 28/x Answer: 20
- 5.Solve: 8/3 = x/18 Answer: 48
- 6.Solve: 4/5 = 24/x Answer: 30
- 7.Solve: 3/6 = x/12 Answer: 6
- 8.Solve: 2/2 = 4/x Answer: 4
- 9.Solve: 7/2 = x/6 Answer: 21
- 10.Solve: 2/8 = 6/x Answer: 24
- 11.Solve: 2/7 = x/42 Answer: 12
- 12.Solve: 3/6 = 18/x Answer: 36
- 13.Solve: 4/8 = x/48 Answer: 24
- 14.Solve: 7/3 = 42/x Answer: 18
- 15.Solve: 2/2 = x/8 Answer: 8
- 16.Solve: 3/2 = 18/x Answer: 12
- 17.Solve: 7/8 = x/48 Answer: 42
- 18.Solve: 4/3 = 8/x Answer: 6
- 19.Solve: 7/3 = x/6 Answer: 14
- 20.Solve: 3/2 = 9/x Answer: 6
Want more practice? See all Grade 7 practice →