25/35 = 1.25/X. Is the answer 25X...please show steps

3 answers

25 = 5 * 5

35 = 5 * 7

1.25 = 5 / 4

25 / 35 = 1.25 / x become:

5 * 5 / ( 5 * 7 ) = 5 / 4x

5 / 7 = 5 / 4x Divide both sides by 5

1 / 7 = 1 / 4x Multiply both sides by x

x / 7 = 1 / 4 Multiply both sides by 7

x = 7 / 4 = 1.75
You could also solve this proportion this way:

25/35 = 1.25/X

25x = 43.75

x = 1.75
Complete 25:35=5 :?