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Finding the Fourth Proportional to 5,379.82, 8,065.98 and 2,748.13

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Solution

The fourth proportional to 5,379.82, 8,065.98 and 2,748.13 is: 4,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.82 : 8,065.98 = 2,748.13 : x
  2. Step 2: Convert to fraction form
    5,379.82/8,065.98 = 2,748.13/x
  3. Step 3: Cross multiply
    5,379.82x = 8,065.98 × 2,748.13
  4. Step 4: Simplify right side
    5,379.82x = 22,166,361.62
  5. Step 5: Solve for x
    x = 22,166,361.62/5,379.82
  6. Step 6: Final answer
    x = 4,120.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.