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Finding the Fourth Proportional to 3,909.87, 5,397.39 and 2,495.48

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Solution

The fourth proportional to 3,909.87, 5,397.39 and 2,495.48 is: 3,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.87 : 5,397.39 = 2,495.48 : x
  2. Step 2: Convert to fraction form
    3,909.87/5,397.39 = 2,495.48/x
  3. Step 3: Cross multiply
    3,909.87x = 5,397.39 × 2,495.48
  4. Step 4: Simplify right side
    3,909.87x = 13,469,051.81
  5. Step 5: Solve for x
    x = 13,469,051.81/3,909.87
  6. Step 6: Final answer
    x = 3,444.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.