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Finding the Third Proportional to 812.53 and 1,726.31

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Solution

The third proportional to 812.53 and 1,726.31 is: 3,667.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    812.53 : 1,726.31 = 1,726.31 : x
  2. Step 2: Convert to fraction form
    812.53/1,726.31 = 1,726.31/x
  3. Step 3: Cross multiply
    812.53x = 1,726.31 × 1,726.31
  4. Step 4: Simplify right side
    812.53x = 2,980,154.85
  5. Step 5: Solve for x
    x = 2,980,154.85/812.53
  6. Step 6: Final answer
    x = 3,667.74

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.