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Finding the Third Proportional to 3,969 and 6,535.69

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Solution

The third proportional to 3,969 and 6,535.69 is: 10,762.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969 : 6,535.69 = 6,535.69 : x
  2. Step 2: Convert to fraction form
    3,969/6,535.69 = 6,535.69/x
  3. Step 3: Cross multiply
    3,969x = 6,535.69 × 6,535.69
  4. Step 4: Simplify right side
    3,969x = 42,715,211.10
  5. Step 5: Solve for x
    x = 42,715,211.10/3,969
  6. Step 6: Final answer
    x = 10,762.21

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.