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Finding the Third Proportional to 5,311 and 8,110

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Solution

The third proportional to 5,311 and 8,110 is: 12,384.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311 : 8,110 = 8,110 : x
  2. Step 2: Convert to fraction form
    5,311/8,110 = 8,110/x
  3. Step 3: Cross multiply
    5,311x = 8,110 × 8,110
  4. Step 4: Simplify right side
    5,311x = 65,772,100
  5. Step 5: Solve for x
    x = 65,772,100/5,311
  6. Step 6: Final answer
    x = 12,384.13

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.