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Finding the Third Proportional to 8,490 and 17,757

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Solution

The third proportional to 8,490 and 17,757 is: 37,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490 : 17,757 = 17,757 : x
  2. Step 2: Convert to fraction form
    8,490/17,757 = 17,757/x
  3. Step 3: Cross multiply
    8,490x = 17,757 × 17,757
  4. Step 4: Simplify right side
    8,490x = 315,311,049
  5. Step 5: Solve for x
    x = 315,311,049/8,490
  6. Step 6: Final answer
    x = 37,139.11

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.