Create a free account now and get 3 full lessons, completely free. Get my 3 free lessons

Canada: choose your country
Grade 7 math · B.9 · Proportional relationships

Find y in a proportional relationship with fractions

Find k from the first pair, then multiply k by the new x.

Loading a question…

See worked examples
  1. y is proportional to x. When x = 12, y = 18. What is y when x = 10?

    Answer: 15

  2. y is proportional to x. When x = 6, y = 15. What is y when x = 10?

    Answer: 25

  3. y is proportional to x. When x = 3, y = 3. What is y when x = 4?

    Answer: 4

Tip: Find k from the first pair, then multiply k by the new x.

Print a worksheet of this skill New questions and an answer key, free.

Up next

Print a free worksheet with answers (20 questions).

Practise without limits

Members practise as much as they like, every day, and get the printable packs and lessons too.