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Finding the Fourth Proportional to 3,982.62, 5,974.60 and 1,642.02

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Solution

The fourth proportional to 3,982.62, 5,974.60 and 1,642.02 is: 2,463.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.62 : 5,974.60 = 1,642.02 : x
  2. Step 2: Convert to fraction form
    3,982.62/5,974.60 = 1,642.02/x
  3. Step 3: Cross multiply
    3,982.62x = 5,974.60 × 1,642.02
  4. Step 4: Simplify right side
    3,982.62x = 9,810,412.69
  5. Step 5: Solve for x
    x = 9,810,412.69/3,982.62
  6. Step 6: Final answer
    x = 2,463.31

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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.