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Finding the Fourth Proportional to 7,229.88, 9,981.81 and 5,906.70

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Solution

The fourth proportional to 7,229.88, 9,981.81 and 5,906.70 is: 8,154.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,229.88 : 9,981.81 = 5,906.70 : x
  2. Step 2: Convert to fraction form
    7,229.88/9,981.81 = 5,906.70/x
  3. Step 3: Cross multiply
    7,229.88x = 9,981.81 × 5,906.70
  4. Step 4: Simplify right side
    7,229.88x = 58,959,557.13
  5. Step 5: Solve for x
    x = 58,959,557.13/7,229.88
  6. Step 6: Final answer
    x = 8,154.98

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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.