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Finding the Third Proportional to 3,390.38 and 7,291.88

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Solution

The third proportional to 3,390.38 and 7,291.88 is: 15,683.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.38 : 7,291.88 = 7,291.88 : x
  2. Step 2: Convert to fraction form
    3,390.38/7,291.88 = 7,291.88/x
  3. Step 3: Cross multiply
    3,390.38x = 7,291.88 × 7,291.88
  4. Step 4: Simplify right side
    3,390.38x = 53,171,441.02
  5. Step 5: Solve for x
    x = 53,171,441.02/3,390.38
  6. Step 6: Final answer
    x = 15,683.06

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.