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Finding the Third Proportional to 3,867.75 and 6,907.78

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Solution

The third proportional to 3,867.75 and 6,907.78 is: 12,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.75 : 6,907.78 = 6,907.78 : x
  2. Step 2: Convert to fraction form
    3,867.75/6,907.78 = 6,907.78/x
  3. Step 3: Cross multiply
    3,867.75x = 6,907.78 × 6,907.78
  4. Step 4: Simplify right side
    3,867.75x = 47,717,441.80
  5. Step 5: Solve for x
    x = 47,717,441.80/3,867.75
  6. Step 6: Final answer
    x = 12,337.26

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.