\dfrac{a}{b}=\dfrac{c}{d} a \cdot d=b \cdot c Неизвестный член пропорции \dfrac{a}{8}=\dfrac{3}{4} a \cdot 4 = 8 \cdot 3 a = \dfrac{8 \cdot 3}{4} = \dfrac{9}{b}=\dfrac{6}{7} \dfrac{2}{5}=\dfrac{c}{15} \dfrac{2}{3}=\dfrac{6}{x}

Задание

Заполни таблицу

\(\dfrac{a}{b}=\dfrac{c}{d}\)	\(a \cdot d=b \cdot c\)	Неизвестный член пропорции
\(\dfrac{a}{8}=\dfrac{3}{4}\)	\(a \cdot 4 = 8 \cdot 3\)	\(a = \dfrac{8 \cdot 3}{4} = \) [ ]
\(\dfrac{9}{b}=\dfrac{6}{7}\)	[ ]	[ ]
\(\dfrac{2}{5}=\dfrac{c}{15}\)	[ ]	[ ]
\(\dfrac{2}{3}=\dfrac{6}{x}\)	[ ]	[ ]