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Finding the Third Proportional to 9,947 and 11,945

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Solution

The third proportional to 9,947 and 11,945 is: 14,344.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,947 : 11,945 = 11,945 : x
  2. Step 2: Convert to fraction form
    9,947/11,945 = 11,945/x
  3. Step 3: Cross multiply
    9,947x = 11,945 × 11,945
  4. Step 4: Simplify right side
    9,947x = 142,683,025
  5. Step 5: Solve for x
    x = 142,683,025/9,947
  6. Step 6: Final answer
    x = 14,344.33

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.