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Finding the Fourth Proportional to 3,939.36, 5,909.04 and 1,343.04

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Solution

The fourth proportional to 3,939.36, 5,909.04 and 1,343.04 is: 2,014.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.36 : 5,909.04 = 1,343.04 : x
  2. Step 2: Convert to fraction form
    3,939.36/5,909.04 = 1,343.04/x
  3. Step 3: Cross multiply
    3,939.36x = 5,909.04 × 1,343.04
  4. Step 4: Simplify right side
    3,939.36x = 7,936,077.08
  5. Step 5: Solve for x
    x = 7,936,077.08/3,939.36
  6. Step 6: Final answer
    x = 2,014.56

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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.