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Finding the Third Proportional to 3,806 and 8,219

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Solution

The third proportional to 3,806 and 8,219 is: 17,748.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806 : 8,219 = 8,219 : x
  2. Step 2: Convert to fraction form
    3,806/8,219 = 8,219/x
  3. Step 3: Cross multiply
    3,806x = 8,219 × 8,219
  4. Step 4: Simplify right side
    3,806x = 67,551,961
  5. Step 5: Solve for x
    x = 67,551,961/3,806
  6. Step 6: Final answer
    x = 17,748.81

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.