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Finding the Third Proportional to 10,200 and 11,040

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Solution

The third proportional to 10,200 and 11,040 is: 11,949.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,200 : 11,040 = 11,040 : x
  2. Step 2: Convert to fraction form
    10,200/11,040 = 11,040/x
  3. Step 3: Cross multiply
    10,200x = 11,040 × 11,040
  4. Step 4: Simplify right side
    10,200x = 121,881,600
  5. Step 5: Solve for x
    x = 121,881,600/10,200
  6. Step 6: Final answer
    x = 11,949.18

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.