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Finding the Fourth Proportional to 8,443.48, 12,660.78 and 4,934.68

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Solution

The fourth proportional to 8,443.48, 12,660.78 and 4,934.68 is: 7,399.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,443.48 : 12,660.78 = 4,934.68 : x
  2. Step 2: Convert to fraction form
    8,443.48/12,660.78 = 4,934.68/x
  3. Step 3: Cross multiply
    8,443.48x = 12,660.78 × 4,934.68
  4. Step 4: Simplify right side
    8,443.48x = 62,476,897.85
  5. Step 5: Solve for x
    x = 62,476,897.85/8,443.48
  6. Step 6: Final answer
    x = 7,399.43

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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.