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Finding the Fourth Proportional to 8,387.39, 12,535.89 and 7,324.87

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Solution

The fourth proportional to 8,387.39, 12,535.89 and 7,324.87 is: 10,947.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.39 : 12,535.89 = 7,324.87 : x
  2. Step 2: Convert to fraction form
    8,387.39/12,535.89 = 7,324.87/x
  3. Step 3: Cross multiply
    8,387.39x = 12,535.89 × 7,324.87
  4. Step 4: Simplify right side
    8,387.39x = 91,823,764.58
  5. Step 5: Solve for x
    x = 91,823,764.58/8,387.39
  6. Step 6: Final answer
    x = 10,947.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.