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Finding the Fourth Proportional to 7,915.91, 11,866.58 and 3,757.88

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Solution

The fourth proportional to 7,915.91, 11,866.58 and 3,757.88 is: 5,633.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.91 : 11,866.58 = 3,757.88 : x
  2. Step 2: Convert to fraction form
    7,915.91/11,866.58 = 3,757.88/x
  3. Step 3: Cross multiply
    7,915.91x = 11,866.58 × 3,757.88
  4. Step 4: Simplify right side
    7,915.91x = 44,593,164.12
  5. Step 5: Solve for x
    x = 44,593,164.12/7,915.91
  6. Step 6: Final answer
    x = 5,633.36

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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.