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Finding the Third Proportional to 3,950 and 5,286.50

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Solution

The third proportional to 3,950 and 5,286.50 is: 7,075.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950 : 5,286.50 = 5,286.50 : x
  2. Step 2: Convert to fraction form
    3,950/5,286.50 = 5,286.50/x
  3. Step 3: Cross multiply
    3,950x = 5,286.50 × 5,286.50
  4. Step 4: Simplify right side
    3,950x = 27,947,082.25
  5. Step 5: Solve for x
    x = 27,947,082.25/3,950
  6. Step 6: Final answer
    x = 7,075.21

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.