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Finding the Fourth Proportional to 3,982.71, 5,972.64 and 1,642.62

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Solution

The fourth proportional to 3,982.71, 5,972.64 and 1,642.62 is: 2,463.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.71 : 5,972.64 = 1,642.62 : x
  2. Step 2: Convert to fraction form
    3,982.71/5,972.64 = 1,642.62/x
  3. Step 3: Cross multiply
    3,982.71x = 5,972.64 × 1,642.62
  4. Step 4: Simplify right side
    3,982.71x = 9,810,777.92
  5. Step 5: Solve for x
    x = 9,810,777.92/3,982.71
  6. Step 6: Final answer
    x = 2,463.34

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1.5x scale

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.