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Finding the Fourth Proportional to 6,379.82, 8,802.05 and 3,860.98

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Solution

The fourth proportional to 6,379.82, 8,802.05 and 3,860.98 is: 5,326.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.82 : 8,802.05 = 3,860.98 : x
  2. Step 2: Convert to fraction form
    6,379.82/8,802.05 = 3,860.98/x
  3. Step 3: Cross multiply
    6,379.82x = 8,802.05 × 3,860.98
  4. Step 4: Simplify right side
    6,379.82x = 33,984,497.70
  5. Step 5: Solve for x
    x = 33,984,497.70/6,379.82
  6. Step 6: Final answer
    x = 5,326.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.