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Finding the Third Proportional to 5,379.75 and 6,493.50

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Solution

The third proportional to 5,379.75 and 6,493.50 is: 7,837.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.75 : 6,493.50 = 6,493.50 : x
  2. Step 2: Convert to fraction form
    5,379.75/6,493.50 = 6,493.50/x
  3. Step 3: Cross multiply
    5,379.75x = 6,493.50 × 6,493.50
  4. Step 4: Simplify right side
    5,379.75x = 42,165,542.25
  5. Step 5: Solve for x
    x = 42,165,542.25/5,379.75
  6. Step 6: Final answer
    x = 7,837.83

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.