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Finding the Third Proportional to 3,115.13 and 4,770.75

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Solution

The third proportional to 3,115.13 and 4,770.75 is: 7,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.13 : 4,770.75 = 4,770.75 : x
  2. Step 2: Convert to fraction form
    3,115.13/4,770.75 = 4,770.75/x
  3. Step 3: Cross multiply
    3,115.13x = 4,770.75 × 4,770.75
  4. Step 4: Simplify right side
    3,115.13x = 22,760,055.56
  5. Step 5: Solve for x
    x = 22,760,055.56/3,115.13
  6. Step 6: Final answer
    x = 7,306.31

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.