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Finding the Third Proportional to 5,638 and 12,197

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Solution

The third proportional to 5,638 and 12,197 is: 26,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638 : 12,197 = 12,197 : x
  2. Step 2: Convert to fraction form
    5,638/12,197 = 12,197/x
  3. Step 3: Cross multiply
    5,638x = 12,197 × 12,197
  4. Step 4: Simplify right side
    5,638x = 148,766,809
  5. Step 5: Solve for x
    x = 148,766,809/5,638
  6. Step 6: Final answer
    x = 26,386.45

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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.