Question

If 4.8 , 6.0 ,x and 8.5 are in proportion then the value of x is? ​

Answer 1

Step-by-step explanation:

then value of x is 6.8.........

Answer 2

GiveN:-

If 4.8 , 6.0 ,x and 8.5 are in proportion.

To FinD:-

The value of x is?

SolutioN:-

We know that on proportion,

$\large{\green{\underline{\boxed{\bf{\dfrac{a}{b}=\dfrac{c}{d}}}}}}$

where,

• a = 4.8
• b = 6.0
• c = x
• d = 8.5

Putting the values,

$\large\implies{\sf{\dfrac{4.8}{6.0}=\dfrac{x}{8.5}}}$

By cross multiplying,

$\large\implies{\sf{4.8\times8.5=6.0\times\:x}}$

$\large\implies{\sf{40.8=6.0x}}$

$\large\implies{\sf{\dfrac{40.8}{6.0}=x}}$

$\large\implies{\sf{\dfrac{\cancel{40.8}}{\cancel{6.0}}=x}}$

$\large\implies{\sf{6.8=x}}$

$\large\therefore\boxed{\bf{x=6.8}}$

VerificatioN:-

$\large\implies{\sf{\dfrac{4.8}{6.0}=\dfrac{6.8}{8.5}}}$

By cross multiplying,

$\large\implies{\sf{4.8\times8.5=6.0\times6.375}}$

$\large\implies{\sf{40.8=40.8}}$

$\large\therefore\boxed{\bf{LHS=RHS.}}$

• Hence verified.

The value of x is 6.8.