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Finding the Fourth Proportional to 8,524.53, 12,789.81 and 2,979.41

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Solution

The fourth proportional to 8,524.53, 12,789.81 and 2,979.41 is: 4,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,524.53 : 12,789.81 = 2,979.41 : x
  2. Step 2: Convert to fraction form
    8,524.53/12,789.81 = 2,979.41/x
  3. Step 3: Cross multiply
    8,524.53x = 12,789.81 × 2,979.41
  4. Step 4: Simplify right side
    8,524.53x = 38,106,023.86
  5. Step 5: Solve for x
    x = 38,106,023.86/8,524.53
  6. Step 6: Final answer
    x = 4,470.16

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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.