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Finding the Fourth Proportional to 3,338.72, 5,004.43 and 1,487.21

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Solution

The fourth proportional to 3,338.72, 5,004.43 and 1,487.21 is: 2,229.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,338.72 : 5,004.43 = 1,487.21 : x
  2. Step 2: Convert to fraction form
    3,338.72/5,004.43 = 1,487.21/x
  3. Step 3: Cross multiply
    3,338.72x = 5,004.43 × 1,487.21
  4. Step 4: Simplify right side
    3,338.72x = 7,442,646.12
  5. Step 5: Solve for x
    x = 7,442,646.12/3,338.72
  6. Step 6: Final answer
    x = 2,229.19

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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.