Question

is 26:18 and 34:78 in proportion?

Answer 1

no

because when you multiply the sides and means both are not equal.

26×78=2028

37×18=666

hence not equal

Answer 2

Answer :-

Steps :-

As we know =

Mean × Mean terms = Extreme × Extreme terms

So,

Mean terms = 18 and 34

Extreme terms = 26 and 78

$\sf{\rightarrow18 \times 34 = 26 \times 78}$

$\sf{\rightarrow612 \: {\not = } \: 2028}$

$\boxed{\sf{they \: are \:not \: in \: proportion}}$