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Finding the Fourth Proportional to 8,778.65, 13,167.97 and 3,580.88

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Solution

The fourth proportional to 8,778.65, 13,167.97 and 3,580.88 is: 5,371.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.65 : 13,167.97 = 3,580.88 : x
  2. Step 2: Convert to fraction form
    8,778.65/13,167.97 = 3,580.88/x
  3. Step 3: Cross multiply
    8,778.65x = 13,167.97 × 3,580.88
  4. Step 4: Simplify right side
    8,778.65x = 47,152,845.62
  5. Step 5: Solve for x
    x = 47,152,845.62/8,778.65
  6. Step 6: Final answer
    x = 5,371.31

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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.