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Finding the Third Proportional to 5,717 and 12,290

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Solution

The third proportional to 5,717 and 12,290 is: 26,420.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,717 : 12,290 = 12,290 : x
  2. Step 2: Convert to fraction form
    5,717/12,290 = 12,290/x
  3. Step 3: Cross multiply
    5,717x = 12,290 × 12,290
  4. Step 4: Simplify right side
    5,717x = 151,044,100
  5. Step 5: Solve for x
    x = 151,044,100/5,717
  6. Step 6: Final answer
    x = 26,420.17

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.