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Finding the Third Proportional to 3,057.75 and 4,278.38

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Solution

The third proportional to 3,057.75 and 4,278.38 is: 5,986.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.75 : 4,278.38 = 4,278.38 : x
  2. Step 2: Convert to fraction form
    3,057.75/4,278.38 = 4,278.38/x
  3. Step 3: Cross multiply
    3,057.75x = 4,278.38 × 4,278.38
  4. Step 4: Simplify right side
    3,057.75x = 18,304,492.64
  5. Step 5: Solve for x
    x = 18,304,492.64/3,057.75
  6. Step 6: Final answer
    x = 5,986.26

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.