Finding the Fourth Proportional to 7,214.75, 9,956.36 and 3,902.75
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Solution
The fourth proportional to 7,214.75, 9,956.36 and 3,902.75 is: 5,385.80
Step by Step Solution
- Step 1: Write the proportion equation
7,214.75 : 9,956.36 = 3,902.75 : x - Step 2: Convert to fraction form
7,214.75/9,956.36 = 3,902.75/x - Step 3: Cross multiply
7,214.75x = 9,956.36 × 3,902.75 - Step 4: Simplify right side
7,214.75x = 38,857,183.99 - Step 5: Solve for x
x = 38,857,183.99/7,214.75 - Step 6: Final answer
x = 5,385.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.