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Finding the Third Proportional to 4,161 and 8,787

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Solution

The third proportional to 4,161 and 8,787 is: 18,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,161 : 8,787 = 8,787 : x
  2. Step 2: Convert to fraction form
    4,161/8,787 = 8,787/x
  3. Step 3: Cross multiply
    4,161x = 8,787 × 8,787
  4. Step 4: Simplify right side
    4,161x = 77,211,369
  5. Step 5: Solve for x
    x = 77,211,369/4,161
  6. Step 6: Final answer
    x = 18,555.96

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.