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Finding the Third Proportional to 6,128 and 9,169

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Solution

The third proportional to 6,128 and 9,169 is: 13,719.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128 : 9,169 = 9,169 : x
  2. Step 2: Convert to fraction form
    6,128/9,169 = 9,169/x
  3. Step 3: Cross multiply
    6,128x = 9,169 × 9,169
  4. Step 4: Simplify right side
    6,128x = 84,070,561
  5. Step 5: Solve for x
    x = 84,070,561/6,128
  6. Step 6: Final answer
    x = 13,719.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.