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Finding the Third Proportional to 7,888 and 12,696

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Solution

The third proportional to 7,888 and 12,696 is: 20,434.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888 : 12,696 = 12,696 : x
  2. Step 2: Convert to fraction form
    7,888/12,696 = 12,696/x
  3. Step 3: Cross multiply
    7,888x = 12,696 × 12,696
  4. Step 4: Simplify right side
    7,888x = 161,188,416
  5. Step 5: Solve for x
    x = 161,188,416/7,888
  6. Step 6: Final answer
    x = 20,434.64

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.