Question

40 e 32 são proporcionais a 5 e 3?
7 e 4 são proporcionais a 10 e 25?

Answer 1

$\frac{40}{x} = 5\\x= \frac{40}{5} \\x=8$

$\frac{40}{x} = 3\\x= \frac{40}{3} \\x=13,333...$


$\frac{32}{x}=3\\x= \frac{32}{3} \\x=10,66...$

$\frac{32}{x}=5\\x= \frac{32}{5} \\x=6,4$


$\frac{7}{x} =10\\x= \frac{7}{10} \\ x= 0,7$

$\frac{7}{x} =25\\x= \frac{7}{25} \\ x= 0,28$


$\frac{4}{x} =10\\x= \frac{4}{10} \\ x= 0,4$

$\frac{4}{x} =25\\x= \frac{4}{25} \\ x= 0,16$