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Finding the Fourth Proportional to 8,945.43, 12,348.17 and 6,713.78

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Solution

The fourth proportional to 8,945.43, 12,348.17 and 6,713.78 is: 9,267.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.43 : 12,348.17 = 6,713.78 : x
  2. Step 2: Convert to fraction form
    8,945.43/12,348.17 = 6,713.78/x
  3. Step 3: Cross multiply
    8,945.43x = 12,348.17 × 6,713.78
  4. Step 4: Simplify right side
    8,945.43x = 82,902,801.47
  5. Step 5: Solve for x
    x = 82,902,801.47/8,945.43
  6. Step 6: Final answer
    x = 9,267.62

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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.