Question

5. Find the value of x in each of the following proportions
800 : 300 : : x : 210​

Answer 1

Hey mate here's your answer-:

800:300 :: x:210

We know that,

Product of means = Product of extremes

$300 \times x = 800 \times 210$

$300x = 168000$

$x = 168000 \div 300$

$x = 56000$

HOPE IT HELPS ! MARK AS BRAINLIEST !!

Answer 2

Given:

$\sf\blue{800 : 300 : : x : 210 }$are in proportion

To Find:

the value of x

Solution:

$\sf \underline{★According \: to \: the \: question : }$

when two quantities are in proportion the product of means is equal to the product of extremes

here the values 800 and 210 are extremes,x and 300 are means

let's frame an equation now:

$: ⟹  \sf \: 800 \times 210 = 300 \times x \\ \\ : ⟹ \sf \: 168,000 = 300x \: \: \: \: \: \: \: \: \: \\ \\ : ⟹ \sf \: x = \cancel \frac{168,000}{300} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ : ⟹ \sf \: x = 560 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

${ \orange{\boxed{\purple{ \mathfrak{ \therefore \: x = 560}}}}}$

hope this helps.!!

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#be brainly:)♡