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Finding the Third Proportional to 4,022 and 8,643

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Solution

The third proportional to 4,022 and 8,643 is: 18,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,022 : 8,643 = 8,643 : x
  2. Step 2: Convert to fraction form
    4,022/8,643 = 8,643/x
  3. Step 3: Cross multiply
    4,022x = 8,643 × 8,643
  4. Step 4: Simplify right side
    4,022x = 74,701,449
  5. Step 5: Solve for x
    x = 74,701,449/4,022
  6. Step 6: Final answer
    x = 18,573.21

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.