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Finding the Third Proportional to 3,910 and 6,809

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Solution

The third proportional to 3,910 and 6,809 is: 11,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910 : 6,809 = 6,809 : x
  2. Step 2: Convert to fraction form
    3,910/6,809 = 6,809/x
  3. Step 3: Cross multiply
    3,910x = 6,809 × 6,809
  4. Step 4: Simplify right side
    3,910x = 46,362,481
  5. Step 5: Solve for x
    x = 46,362,481/3,910
  6. Step 6: Final answer
    x = 11,857.41

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Why These Related Problems?

These problems maintain the same ratio (1.74) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.