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Finding the Fourth Proportional to 1,981.97, 2,972.90 and 1,150.27

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Solution

The fourth proportional to 1,981.97, 2,972.90 and 1,150.27 is: 1,725.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.97 : 2,972.90 = 1,150.27 : x
  2. Step 2: Convert to fraction form
    1,981.97/2,972.90 = 1,150.27/x
  3. Step 3: Cross multiply
    1,981.97x = 2,972.90 × 1,150.27
  4. Step 4: Simplify right side
    1,981.97x = 3,419,637.68
  5. Step 5: Solve for x
    x = 3,419,637.68/1,981.97
  6. Step 6: Final answer
    x = 1,725.37

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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.