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Finding the Third Proportional to 812 and 1,696

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Solution

The third proportional to 812 and 1,696 is: 3,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    812 : 1,696 = 1,696 : x
  2. Step 2: Convert to fraction form
    812/1,696 = 1,696/x
  3. Step 3: Cross multiply
    812x = 1,696 × 1,696
  4. Step 4: Simplify right side
    812x = 2,876,416
  5. Step 5: Solve for x
    x = 2,876,416/812
  6. Step 6: Final answer
    x = 3,542.38

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.