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Finding the Fourth Proportional to 7,229.34, 9,976.68 and 4,084.92

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Solution

The fourth proportional to 7,229.34, 9,976.68 and 4,084.92 is: 5,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,229.34 : 9,976.68 = 4,084.92 : x
  2. Step 2: Convert to fraction form
    7,229.34/9,976.68 = 4,084.92/x
  3. Step 3: Cross multiply
    7,229.34x = 9,976.68 × 4,084.92
  4. Step 4: Simplify right side
    7,229.34x = 40,753,939.67
  5. Step 5: Solve for x
    x = 40,753,939.67/7,229.34
  6. Step 6: Final answer
    x = 5,637.30

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Double scale
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Similar ratio
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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.