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Finding the Third Proportional to 3,600 and 6,660

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Solution

The third proportional to 3,600 and 6,660 is: 12,321

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600 : 6,660 = 6,660 : x
  2. Step 2: Convert to fraction form
    3,600/6,660 = 6,660/x
  3. Step 3: Cross multiply
    3,600x = 6,660 × 6,660
  4. Step 4: Simplify right side
    3,600x = 44,355,600
  5. Step 5: Solve for x
    x = 44,355,600/3,600
  6. Step 6: Final answer
    x = 12,321

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Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.