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Finding the Fourth Proportional to 3,938.28, 5,902.02 and 3,820.02

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Solution

The fourth proportional to 3,938.28, 5,902.02 and 3,820.02 is: 5,724.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.28 : 5,902.02 = 3,820.02 : x
  2. Step 2: Convert to fraction form
    3,938.28/5,902.02 = 3,820.02/x
  3. Step 3: Cross multiply
    3,938.28x = 5,902.02 × 3,820.02
  4. Step 4: Simplify right side
    3,938.28x = 22,545,834.44
  5. Step 5: Solve for x
    x = 22,545,834.44/3,938.28
  6. Step 6: Final answer
    x = 5,724.79

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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.