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Finding the Fourth Proportional to 8,912.43, 13,371.08 and 3,721.95

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Solution

The fourth proportional to 8,912.43, 13,371.08 and 3,721.95 is: 5,583.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.43 : 13,371.08 = 3,721.95 : x
  2. Step 2: Convert to fraction form
    8,912.43/13,371.08 = 3,721.95/x
  3. Step 3: Cross multiply
    8,912.43x = 13,371.08 × 3,721.95
  4. Step 4: Simplify right side
    8,912.43x = 49,766,472.60
  5. Step 5: Solve for x
    x = 49,766,472.60/8,912.43
  6. Step 6: Final answer
    x = 5,583.94

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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.