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Finding the Third Proportional to 7,888 and 11,212

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Solution

The third proportional to 7,888 and 11,212 is: 15,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888 : 11,212 = 11,212 : x
  2. Step 2: Convert to fraction form
    7,888/11,212 = 11,212/x
  3. Step 3: Cross multiply
    7,888x = 11,212 × 11,212
  4. Step 4: Simplify right side
    7,888x = 125,708,944
  5. Step 5: Solve for x
    x = 125,708,944/7,888
  6. Step 6: Final answer
    x = 15,936.73

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.