Question

помогите решить пропорции
4,5 12,5
—— = ——
х.............3

4,5 12,5
—— = ——
х............5
4,5 12,5
—— = ——
х..........4

4,5 12,5
—— = ——
х............6

Answer 1

$\frac{4.5}{x} = \frac{12.5}{3} \\ x = \frac{3 \times 4.5}{12.5} \\ x = \frac{3 \times 45}{125} \\ x = \frac{3 \times 9}{25} \\ x = \frac{27}{25} \\ x = 1.08$

$\frac{4.5}{x} = \frac{12.5}{5} \\ x = \frac{5 \times 4 .5}{12.5} \\ x = \frac{5 \times 45}{125} \\ x = \frac{9}{5} \\ x = 1.8$

$\frac{4.5}{x} = \frac{12.5}{4} \\ x = \frac{4 \times 4.5}{12.5} \\ x = \frac{4 \times 45}{125} \\ x = \frac{4 \times 9}{25} \\ x = \frac{36}{25} \\ x = 1.44$

$\frac{4.5}{x} = \frac{12.5}{6} \\ x = \frac{6 \times 4.5}{12.5} \\ x = \frac{6 \times 45}{125} \\ x = \frac{6 \times 9}{25 } \\ x = \frac{54}{25} \\ x = 2.16$