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Finding the Third Proportional to 8,690 and 9,458

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Solution

The third proportional to 8,690 and 9,458 is: 10,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690 : 9,458 = 9,458 : x
  2. Step 2: Convert to fraction form
    8,690/9,458 = 9,458/x
  3. Step 3: Cross multiply
    8,690x = 9,458 × 9,458
  4. Step 4: Simplify right side
    8,690x = 89,453,764
  5. Step 5: Solve for x
    x = 89,453,764/8,690
  6. Step 6: Final answer
    x = 10,293.87

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.