Home / 3,255.61-4,879.71-1,380.33

Finding the Fourth Proportional to 3,255.61, 4,879.71 and 1,380.33

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Solution

The fourth proportional to 3,255.61, 4,879.71 and 1,380.33 is: 2,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,255.61 : 4,879.71 = 1,380.33 : x
  2. Step 2: Convert to fraction form
    3,255.61/4,879.71 = 1,380.33/x
  3. Step 3: Cross multiply
    3,255.61x = 4,879.71 × 1,380.33
  4. Step 4: Simplify right side
    3,255.61x = 6,735,610.10
  5. Step 5: Solve for x
    x = 6,735,610.10/3,255.61
  6. Step 6: Final answer
    x = 2,068.92

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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.