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Finding the Fourth Proportional to 5,124.83, 7,687.67 and 3,755.21

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Solution

The fourth proportional to 5,124.83, 7,687.67 and 3,755.21 is: 5,633.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,124.83 : 7,687.67 = 3,755.21 : x
  2. Step 2: Convert to fraction form
    5,124.83/7,687.67 = 3,755.21/x
  3. Step 3: Cross multiply
    5,124.83x = 7,687.67 × 3,755.21
  4. Step 4: Simplify right side
    5,124.83x = 28,868,758.05
  5. Step 5: Solve for x
    x = 28,868,758.05/5,124.83
  6. Step 6: Final answer
    x = 5,633.12

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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.