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Finding the Third Proportional to 3,505 and 8,189

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Solution

The third proportional to 3,505 and 8,189 is: 19,132.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505 : 8,189 = 8,189 : x
  2. Step 2: Convert to fraction form
    3,505/8,189 = 8,189/x
  3. Step 3: Cross multiply
    3,505x = 8,189 × 8,189
  4. Step 4: Simplify right side
    3,505x = 67,059,721
  5. Step 5: Solve for x
    x = 67,059,721/3,505
  6. Step 6: Final answer
    x = 19,132.59

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.