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Finding the Fourth Proportional to 8,818.61, 12,169.87 and 4,839.71

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Solution

The fourth proportional to 8,818.61, 12,169.87 and 4,839.71 is: 6,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.61 : 12,169.87 = 4,839.71 : x
  2. Step 2: Convert to fraction form
    8,818.61/12,169.87 = 4,839.71/x
  3. Step 3: Cross multiply
    8,818.61x = 12,169.87 × 4,839.71
  4. Step 4: Simplify right side
    8,818.61x = 58,898,580.69
  5. Step 5: Solve for x
    x = 58,898,580.69/8,818.61
  6. Step 6: Final answer
    x = 6,678.90

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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.