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Finding the Third Proportional to 3,421.13 and 5,190.19

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Solution

The third proportional to 3,421.13 and 5,190.19 is: 7,874.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.13 : 5,190.19 = 5,190.19 : x
  2. Step 2: Convert to fraction form
    3,421.13/5,190.19 = 5,190.19/x
  3. Step 3: Cross multiply
    3,421.13x = 5,190.19 × 5,190.19
  4. Step 4: Simplify right side
    3,421.13x = 26,938,046.29
  5. Step 5: Solve for x
    x = 26,938,046.29/3,421.13
  6. Step 6: Final answer
    x = 7,874.03

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.