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Finding the Fourth Proportional to 8,972.79, 13,453.75 and 3,711.25

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Solution

The fourth proportional to 8,972.79, 13,453.75 and 3,711.25 is: 5,564.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.79 : 13,453.75 = 3,711.25 : x
  2. Step 2: Convert to fraction form
    8,972.79/13,453.75 = 3,711.25/x
  3. Step 3: Cross multiply
    8,972.79x = 13,453.75 × 3,711.25
  4. Step 4: Simplify right side
    8,972.79x = 49,930,254.04
  5. Step 5: Solve for x
    x = 49,930,254.04/8,972.79
  6. Step 6: Final answer
    x = 5,564.63

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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.