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Finding the Third Proportional to 3,291 and 7,868.25

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Solution

The third proportional to 3,291 and 7,868.25 is: 18,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291 : 7,868.25 = 7,868.25 : x
  2. Step 2: Convert to fraction form
    3,291/7,868.25 = 7,868.25/x
  3. Step 3: Cross multiply
    3,291x = 7,868.25 × 7,868.25
  4. Step 4: Simplify right side
    3,291x = 61,909,358.06
  5. Step 5: Solve for x
    x = 61,909,358.06/3,291
  6. Step 6: Final answer
    x = 18,811.72

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.