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Finding the Third Proportional to 7,108 and 11,356

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Solution

The third proportional to 7,108 and 11,356 is: 18,142.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108 : 11,356 = 11,356 : x
  2. Step 2: Convert to fraction form
    7,108/11,356 = 11,356/x
  3. Step 3: Cross multiply
    7,108x = 11,356 × 11,356
  4. Step 4: Simplify right side
    7,108x = 128,958,736
  5. Step 5: Solve for x
    x = 128,958,736/7,108
  6. Step 6: Final answer
    x = 18,142.76

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.