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Finding the Third Proportional to 1,729 and 3,751

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Solution

The third proportional to 1,729 and 3,751 is: 8,137.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729 : 3,751 = 3,751 : x
  2. Step 2: Convert to fraction form
    1,729/3,751 = 3,751/x
  3. Step 3: Cross multiply
    1,729x = 3,751 × 3,751
  4. Step 4: Simplify right side
    1,729x = 14,070,001
  5. Step 5: Solve for x
    x = 14,070,001/1,729
  6. Step 6: Final answer
    x = 8,137.65

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.