Answer:
y = 1.1
Step-by-step explanation:
Proportion is a statement that two ratios are equal.
It can be written in two ways:
- Two equal fractions [tex]\frac{a}{b}[/tex] = [tex]\frac{c}{d}[/tex]
- Two equal sides a: b = c: d.
We can use cross products to find a missing term in it.
Let us solve the question
∵ The proportion statement is [tex]\frac{7.7}{15.4}[/tex] = [tex]\frac{y}{2.2}[/tex]
→ Use the cross multiplication to find y
∵ y × 15.4 = 7.7 × 2.2
∴ 15.4y = 16.94
→ Divide both sides by 15.4 to find y
∵ [tex]\frac{15.4y}{15.4}[/tex] = [tex]\frac{16.94}{15.4}[/tex]
∴ y = 1.1
No need to round it to the nearest tenth because the answer has no hundredth to round it to the tenth
