Year 7 maths · B.13 · Proportional relationships
Solve proportions with x in any position
Cross-multiply, then divide to get x on its own.
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Solve the proportion for x: 4/x = 4/12
Answer: 12
Solve the proportion for x: 2/5 = 4/x
Answer: 10
Solve the proportion for x: 4/x = 3/9
Answer: 12
Tip: Cross-multiply, then divide to get x on its own.
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