Question

If 5 : 4 = y : 28 then value of y?​

Answer 1

Answer:

5/4 = y/28

with cross multiplication

5×28= y×4

Step-by-step explanation:

140 = 4y

35 = y

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Answer 2

we know that first term×fourth term =second

term×third term

here first term=5

second term =4

y=third term

fourth term=28

third term=first term×fourth term/second term

=5×28/4=140/4=35

now 5:4=35:28

35:28=5:4

therefore,5:4=5:4

ᴅᴇғɪɴɪᴛɪᴏɴ ᴏғ ᴘʀᴏᴘᴏʀᴛɪᴏɴ

A proportion is an equation with a ratio on each side. It is a statement that two ratios are equal. 3/4 = 6/8 is an example of a proportion. When one of the four numbers in a proportion is unknown, cross products may be used to find the unknown number. This is called solving the proportion.