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Finding the Fourth Proportional to 3,944.96, 5,918.25 and 1,479.77

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Solution

The fourth proportional to 3,944.96, 5,918.25 and 1,479.77 is: 2,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,944.96 : 5,918.25 = 1,479.77 : x
  2. Step 2: Convert to fraction form
    3,944.96/5,918.25 = 1,479.77/x
  3. Step 3: Cross multiply
    3,944.96x = 5,918.25 × 1,479.77
  4. Step 4: Simplify right side
    3,944.96x = 8,757,648.80
  5. Step 5: Solve for x
    x = 8,757,648.80/3,944.96
  6. Step 6: Final answer
    x = 2,219.96

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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.