Question

Create a proportion from each set of numbers and only use four numbers from each set

43, 52, 86, 27, 26,​

Answer 1

Explanation:

Approach: If four numbers a, b, c and d are in proportion then a:b = c:d. The solution is to sort the four numbers and pair up the first 2 together and the last 2 together and check their ratios this is because, in order for them to be in proportion, the product of means has to be equal to the product of extremes.