Home / 4,120.85-6,179.61-2,558.54

Finding the Fourth Proportional to 4,120.85, 6,179.61 and 2,558.54

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Solution

The fourth proportional to 4,120.85, 6,179.61 and 2,558.54 is: 3,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.85 : 6,179.61 = 2,558.54 : x
  2. Step 2: Convert to fraction form
    4,120.85/6,179.61 = 2,558.54/x
  3. Step 3: Cross multiply
    4,120.85x = 6,179.61 × 2,558.54
  4. Step 4: Simplify right side
    4,120.85x = 15,810,779.37
  5. Step 5: Solve for x
    x = 15,810,779.37/4,120.85
  6. Step 6: Final answer
    x = 3,836.78

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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.