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Finding the Fourth Proportional to 8,379.80, 12,571.77 and 2,536.43

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Solution

The fourth proportional to 8,379.80, 12,571.77 and 2,536.43 is: 3,805.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.80 : 12,571.77 = 2,536.43 : x
  2. Step 2: Convert to fraction form
    8,379.80/12,571.77 = 2,536.43/x
  3. Step 3: Cross multiply
    8,379.80x = 12,571.77 × 2,536.43
  4. Step 4: Simplify right side
    8,379.80x = 31,887,361.23
  5. Step 5: Solve for x
    x = 31,887,361.23/8,379.80
  6. Step 6: Final answer
    x = 3,805.27

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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.