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Finding the Third Proportional to 8,225 and 12,722

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Solution

The third proportional to 8,225 and 12,722 is: 19,677.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,225 : 12,722 = 12,722 : x
  2. Step 2: Convert to fraction form
    8,225/12,722 = 12,722/x
  3. Step 3: Cross multiply
    8,225x = 12,722 × 12,722
  4. Step 4: Simplify right side
    8,225x = 161,849,284
  5. Step 5: Solve for x
    x = 161,849,284/8,225
  6. Step 6: Final answer
    x = 19,677.72

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.