the heights of russian dolls are in the ratio 4:6:7. in a set of dolls, the middle height is 9cm what are the?

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the heights of russian dolls are in the ratio 4:6:7. in a set of dolls, the middle height is 9cm what are the?

2007-10-09 08:43:28 · 2 answers · asked by CARL E 1 in Science & Mathematics ➔ Mathematics

2 answers

You can set up two proportions:

4/x = 6/9, cross multiply and get 6x=36 or x = 6

7/x = 6/9
6x = 63
x = 10 1/2

Small doll is 6 cm, large doll is 10 1/2 cm.

2007-10-09 09:16:18 · answer #1 · answered by Marley K 7 · 0⤊ 0⤋

6 and 10.5

Multiply 1st and last numbers by 3/2

2007-10-09 15:50:22 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋