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Finding the Fourth Proportional to 3,879.22, 5,814.66 and 2,563.90

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Solution

The fourth proportional to 3,879.22, 5,814.66 and 2,563.90 is: 3,843.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.22 : 5,814.66 = 2,563.90 : x
  2. Step 2: Convert to fraction form
    3,879.22/5,814.66 = 2,563.90/x
  3. Step 3: Cross multiply
    3,879.22x = 5,814.66 × 2,563.90
  4. Step 4: Simplify right side
    3,879.22x = 14,908,206.77
  5. Step 5: Solve for x
    x = 14,908,206.77/3,879.22
  6. Step 6: Final answer
    x = 3,843.09

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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.