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Finding the Third Proportional to 3,838 and 8,279

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Solution

The third proportional to 3,838 and 8,279 is: 17,858.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838 : 8,279 = 8,279 : x
  2. Step 2: Convert to fraction form
    3,838/8,279 = 8,279/x
  3. Step 3: Cross multiply
    3,838x = 8,279 × 8,279
  4. Step 4: Simplify right side
    3,838x = 68,541,841
  5. Step 5: Solve for x
    x = 68,541,841/3,838
  6. Step 6: Final answer
    x = 17,858.74

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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.