Using the property , fill in the blanks substituting proper numbers in the following.

(i)

(ii)

(i) Let

∴ on comparing first two equalities, we get:

5/7 = x/28

Cross multiply and get:

7x = 28 × 5

⇒ x = 4 × 5 = 20

Now, compare the first and third equalities and get:

5/7 = 35/y

Cross multiply and get:

5y = 7 × 35

⇒ y = 7 × 7 = 49

Now, compare the first and fourth equalities and get:

5/7 = z/3.5

Cross multiply and get:

7z = 5 × 3.5

⇒ 7z = 5 × (35/10)

⇒ z = 5 × (5/10)

⇒ z = 25/10 = 2.5

∴

(ii) Let

∴ On comparing first two equalities, we get:

9/14 = 4.5/x

Cross multiply and get:

9x = 14 × 4.5

⇒ x = 14 × 0.5 = 7

Now, compare the first and third equalities and get:

9/14 = y/42

Cross multiply and get:

14y = 9 × 42

⇒ y = 9 × 3 = 27

Now, compare the first and fourth equalities and get:

9/14 = z/3.5

Cross multiply and get:

14z = 9 × 3.5

⇒ z = 9 × (3.5/14)

⇒ z = 9 × (0.25)

⇒ z = 2.25

∴