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Finding the Third Proportional to 1,372.57 and 1,972.48

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Solution

The third proportional to 1,372.57 and 1,972.48 is: 2,834.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.57 : 1,972.48 = 1,972.48 : x
  2. Step 2: Convert to fraction form
    1,372.57/1,972.48 = 1,972.48/x
  3. Step 3: Cross multiply
    1,372.57x = 1,972.48 × 1,972.48
  4. Step 4: Simplify right side
    1,372.57x = 3,890,663.79
  5. Step 5: Solve for x
    x = 3,890,663.79/1,372.57
  6. Step 6: Final answer
    x = 2,834.58

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.