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Finding the Third Proportional to 3,180 and 3,486

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Solution

The third proportional to 3,180 and 3,486 is: 3,821.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180 : 3,486 = 3,486 : x
  2. Step 2: Convert to fraction form
    3,180/3,486 = 3,486/x
  3. Step 3: Cross multiply
    3,180x = 3,486 × 3,486
  4. Step 4: Simplify right side
    3,180x = 12,152,196
  5. Step 5: Solve for x
    x = 12,152,196/3,180
  6. Step 6: Final answer
    x = 3,821.45

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.