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Finding the Fourth Proportional to 3,912.94, 5,869.97 and 1,447.12

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Solution

The fourth proportional to 3,912.94, 5,869.97 and 1,447.12 is: 2,170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.94 : 5,869.97 = 1,447.12 : x
  2. Step 2: Convert to fraction form
    3,912.94/5,869.97 = 1,447.12/x
  3. Step 3: Cross multiply
    3,912.94x = 5,869.97 × 1,447.12
  4. Step 4: Simplify right side
    3,912.94x = 8,494,514.40
  5. Step 5: Solve for x
    x = 8,494,514.40/3,912.94
  6. Step 6: Final answer
    x = 2,170.88

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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.