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Finding the Fourth Proportional to 5,711.50, 7,881.87 and 3,227.50

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Solution

The fourth proportional to 5,711.50, 7,881.87 and 3,227.50 is: 4,453.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,711.50 : 7,881.87 = 3,227.50 : x
  2. Step 2: Convert to fraction form
    5,711.50/7,881.87 = 3,227.50/x
  3. Step 3: Cross multiply
    5,711.50x = 7,881.87 × 3,227.50
  4. Step 4: Simplify right side
    5,711.50x = 25,438,735.43
  5. Step 5: Solve for x
    x = 25,438,735.43/5,711.50
  6. Step 6: Final answer
    x = 4,453.95

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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.