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Finding the Fourth Proportional to 3,912.52, 5,868.62 and 1,447.28

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Solution

The fourth proportional to 3,912.52, 5,868.62 and 1,447.28 is: 2,170.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.52 : 5,868.62 = 1,447.28 : x
  2. Step 2: Convert to fraction form
    3,912.52/5,868.62 = 1,447.28/x
  3. Step 3: Cross multiply
    3,912.52x = 5,868.62 × 1,447.28
  4. Step 4: Simplify right side
    3,912.52x = 8,493,536.35
  5. Step 5: Solve for x
    x = 8,493,536.35/3,912.52
  6. Step 6: Final answer
    x = 2,170.86

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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.