Home / 3,945.20-5,917.89-1,479.56

Finding the Fourth Proportional to 3,945.20, 5,917.89 and 1,479.56

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Solution

The fourth proportional to 3,945.20, 5,917.89 and 1,479.56 is: 2,219.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.20 : 5,917.89 = 1,479.56 : x
  2. Step 2: Convert to fraction form
    3,945.20/5,917.89 = 1,479.56/x
  3. Step 3: Cross multiply
    3,945.20x = 5,917.89 × 1,479.56
  4. Step 4: Simplify right side
    3,945.20x = 8,755,873.33
  5. Step 5: Solve for x
    x = 8,755,873.33/3,945.20
  6. Step 6: Final answer
    x = 2,219.37

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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.