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Finding the Fourth Proportional to 8,614.74, 12,915.84 and 3,932.22

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Solution

The fourth proportional to 8,614.74, 12,915.84 and 3,932.22 is: 5,895.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,614.74 : 12,915.84 = 3,932.22 : x
  2. Step 2: Convert to fraction form
    8,614.74/12,915.84 = 3,932.22/x
  3. Step 3: Cross multiply
    8,614.74x = 12,915.84 × 3,932.22
  4. Step 4: Simplify right side
    8,614.74x = 50,787,924.36
  5. Step 5: Solve for x
    x = 50,787,924.36/8,614.74
  6. Step 6: Final answer
    x = 5,895.47

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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.