Necesito saber como debo calcular las siguientes operaciones4 / 10 = X / 609 / 12 = 12 / X8 / 32 = 2 / X3 / X = X / 12X / 6 = 24 / X?

4 / 10 = x / 60

60(4) = 10x

240 = 10x

x = 240 / 10

x = 24

_________

9 / 12 = 12 / x

9(x) = 12x12

9x = 144

x = 144 / 9

x = 16

_________

8 / 32 = 2 / x

x / 2 = 32 / 8

x / 2 = 4

x = 4 * 2

x = 8

________

3 / x = x / 12

12(3) = x ^ 2

36 = x ^ 2

x = - 6

x = 6

_________

x / 6 = 24 / x

x ^ 2 = 6(24)

x ^ 2 = 144

x = 12

x = - 12

saludos.