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Finding the Third Proportional to 3,122 and 6,156

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Solution

The third proportional to 3,122 and 6,156 is: 12,138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122 : 6,156 = 6,156 : x
  2. Step 2: Convert to fraction form
    3,122/6,156 = 6,156/x
  3. Step 3: Cross multiply
    3,122x = 6,156 × 6,156
  4. Step 4: Simplify right side
    3,122x = 37,896,336
  5. Step 5: Solve for x
    x = 37,896,336/3,122
  6. Step 6: Final answer
    x = 12,138.48

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.