Home / 3,359.88-5,039.21-1,278.79

Finding the Fourth Proportional to 3,359.88, 5,039.21 and 1,278.79

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Solution

The fourth proportional to 3,359.88, 5,039.21 and 1,278.79 is: 1,917.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,359.88 : 5,039.21 = 1,278.79 : x
  2. Step 2: Convert to fraction form
    3,359.88/5,039.21 = 1,278.79/x
  3. Step 3: Cross multiply
    3,359.88x = 5,039.21 × 1,278.79
  4. Step 4: Simplify right side
    3,359.88x = 6,444,081.95
  5. Step 5: Solve for x
    x = 6,444,081.95/3,359.88
  6. Step 6: Final answer
    x = 1,917.95

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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.