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Finding the Fourth Proportional to 9,158.80, 13,738.20 and 9,061.60

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Solution

The fourth proportional to 9,158.80, 13,738.20 and 9,061.60 is: 13,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.80 : 13,738.20 = 9,061.60 : x
  2. Step 2: Convert to fraction form
    9,158.80/13,738.20 = 9,061.60/x
  3. Step 3: Cross multiply
    9,158.80x = 13,738.20 × 9,061.60
  4. Step 4: Simplify right side
    9,158.80x = 124,490,073.12
  5. Step 5: Solve for x
    x = 124,490,073.12/9,158.80
  6. Step 6: Final answer
    x = 13,592.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.