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Finding the Fourth Proportional to 3,963.42, 5,451.03 and 3,249.90

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Solution

The fourth proportional to 3,963.42, 5,451.03 and 3,249.90 is: 4,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,963.42 : 5,451.03 = 3,249.90 : x
  2. Step 2: Convert to fraction form
    3,963.42/5,451.03 = 3,249.90/x
  3. Step 3: Cross multiply
    3,963.42x = 5,451.03 × 3,249.90
  4. Step 4: Simplify right side
    3,963.42x = 17,715,302.40
  5. Step 5: Solve for x
    x = 17,715,302.40/3,963.42
  6. Step 6: Final answer
    x = 4,469.70

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1.5x scale

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.