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Finding the Fourth Proportional to 8,929.71, 13,399.13 and 3,668.76

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Solution

The fourth proportional to 8,929.71, 13,399.13 and 3,668.76 is: 5,505.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.71 : 13,399.13 = 3,668.76 : x
  2. Step 2: Convert to fraction form
    8,929.71/13,399.13 = 3,668.76/x
  3. Step 3: Cross multiply
    8,929.71x = 13,399.13 × 3,668.76
  4. Step 4: Simplify right side
    8,929.71x = 49,158,192.18
  5. Step 5: Solve for x
    x = 49,158,192.18/8,929.71
  6. Step 6: Final answer
    x = 5,505.02

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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.