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Finding the Third Proportional to 4,020 and 8,652

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Solution

The third proportional to 4,020 and 8,652 is: 18,621.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,020 : 8,652 = 8,652 : x
  2. Step 2: Convert to fraction form
    4,020/8,652 = 8,652/x
  3. Step 3: Cross multiply
    4,020x = 8,652 × 8,652
  4. Step 4: Simplify right side
    4,020x = 74,857,104
  5. Step 5: Solve for x
    x = 74,857,104/4,020
  6. Step 6: Final answer
    x = 18,621.17

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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.