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Finding the Third Proportional to 1,251.50 and 1,836.50

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Solution

The third proportional to 1,251.50 and 1,836.50 is: 2,694.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.50 : 1,836.50 = 1,836.50 : x
  2. Step 2: Convert to fraction form
    1,251.50/1,836.50 = 1,836.50/x
  3. Step 3: Cross multiply
    1,251.50x = 1,836.50 × 1,836.50
  4. Step 4: Simplify right side
    1,251.50x = 3,372,732.25
  5. Step 5: Solve for x
    x = 3,372,732.25/1,251.50
  6. Step 6: Final answer
    x = 2,694.95

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.