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Finding the Third Proportional to 8,619 and 18,879

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Solution

The third proportional to 8,619 and 18,879 is: 41,352.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619 : 18,879 = 18,879 : x
  2. Step 2: Convert to fraction form
    8,619/18,879 = 18,879/x
  3. Step 3: Cross multiply
    8,619x = 18,879 × 18,879
  4. Step 4: Simplify right side
    8,619x = 356,416,641
  5. Step 5: Solve for x
    x = 356,416,641/8,619
  6. Step 6: Final answer
    x = 41,352.44

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.