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Finding the Fourth Proportional to 2,939.92, 4,404.20 and 2,013.28

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Solution

The fourth proportional to 2,939.92, 4,404.20 and 2,013.28 is: 3,016.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.92 : 4,404.20 = 2,013.28 : x
  2. Step 2: Convert to fraction form
    2,939.92/4,404.20 = 2,013.28/x
  3. Step 3: Cross multiply
    2,939.92x = 4,404.20 × 2,013.28
  4. Step 4: Simplify right side
    2,939.92x = 8,866,887.78
  5. Step 5: Solve for x
    x = 8,866,887.78/2,939.92
  6. Step 6: Final answer
    x = 3,016.03

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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.