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Finding the Fourth Proportional to 5,915.92, 8,871.12 and 3,451.36

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Solution

The fourth proportional to 5,915.92, 8,871.12 and 3,451.36 is: 5,175.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.92 : 8,871.12 = 3,451.36 : x
  2. Step 2: Convert to fraction form
    5,915.92/8,871.12 = 3,451.36/x
  3. Step 3: Cross multiply
    5,915.92x = 8,871.12 × 3,451.36
  4. Step 4: Simplify right side
    5,915.92x = 30,617,428.72
  5. Step 5: Solve for x
    x = 30,617,428.72/5,915.92
  6. Step 6: Final answer
    x = 5,175.43

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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.