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Finding the Fourth Proportional to 5,123.53, 7,672.29 and 2,928.43

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Solution

The fourth proportional to 5,123.53, 7,672.29 and 2,928.43 is: 4,385.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.53 : 7,672.29 = 2,928.43 : x
  2. Step 2: Convert to fraction form
    5,123.53/7,672.29 = 2,928.43/x
  3. Step 3: Cross multiply
    5,123.53x = 7,672.29 × 2,928.43
  4. Step 4: Simplify right side
    5,123.53x = 22,467,764.20
  5. Step 5: Solve for x
    x = 22,467,764.20/5,123.53
  6. Step 6: Final answer
    x = 4,385.21

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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.