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Finding the Third Proportional to 5,055 and 9,111

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Solution

The third proportional to 5,055 and 9,111 is: 16,421.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,055 : 9,111 = 9,111 : x
  2. Step 2: Convert to fraction form
    5,055/9,111 = 9,111/x
  3. Step 3: Cross multiply
    5,055x = 9,111 × 9,111
  4. Step 4: Simplify right side
    5,055x = 83,010,321
  5. Step 5: Solve for x
    x = 83,010,321/5,055
  6. Step 6: Final answer
    x = 16,421.43

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.