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Finding the Fourth Proportional to 3,399.71, 5,100.50 and 1,939.88

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Solution

The fourth proportional to 3,399.71, 5,100.50 and 1,939.88 is: 2,910.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.71 : 5,100.50 = 1,939.88 : x
  2. Step 2: Convert to fraction form
    3,399.71/5,100.50 = 1,939.88/x
  3. Step 3: Cross multiply
    3,399.71x = 5,100.50 × 1,939.88
  4. Step 4: Simplify right side
    3,399.71x = 9,894,375.54
  5. Step 5: Solve for x
    x = 9,894,375.54/3,399.71
  6. Step 6: Final answer
    x = 2,910.36

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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.