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Finding the Third Proportional to 5,515 and 8,344

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Solution

The third proportional to 5,515 and 8,344 is: 12,624.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515 : 8,344 = 8,344 : x
  2. Step 2: Convert to fraction form
    5,515/8,344 = 8,344/x
  3. Step 3: Cross multiply
    5,515x = 8,344 × 8,344
  4. Step 4: Simplify right side
    5,515x = 69,622,336
  5. Step 5: Solve for x
    x = 69,622,336/5,515
  6. Step 6: Final answer
    x = 12,624.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.