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Finding the Third Proportional to 2,198 and 3,868

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Solution

The third proportional to 2,198 and 3,868 is: 6,806.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198 : 3,868 = 3,868 : x
  2. Step 2: Convert to fraction form
    2,198/3,868 = 3,868/x
  3. Step 3: Cross multiply
    2,198x = 3,868 × 3,868
  4. Step 4: Simplify right side
    2,198x = 14,961,424
  5. Step 5: Solve for x
    x = 14,961,424/2,198
  6. Step 6: Final answer
    x = 6,806.84

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.