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Finding the Third Proportional to 9,110 and 21,287

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Solution

The third proportional to 9,110 and 21,287 is: 49,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,110 : 21,287 = 21,287 : x
  2. Step 2: Convert to fraction form
    9,110/21,287 = 21,287/x
  3. Step 3: Cross multiply
    9,110x = 21,287 × 21,287
  4. Step 4: Simplify right side
    9,110x = 453,136,369
  5. Step 5: Solve for x
    x = 453,136,369/9,110
  6. Step 6: Final answer
    x = 49,740.55

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.