Home / 4,779.60-7,163.92-2,149.12

Finding the Fourth Proportional to 4,779.60, 7,163.92 and 2,149.12

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Solution

The fourth proportional to 4,779.60, 7,163.92 and 2,149.12 is: 3,221.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.60 : 7,163.92 = 2,149.12 : x
  2. Step 2: Convert to fraction form
    4,779.60/7,163.92 = 2,149.12/x
  3. Step 3: Cross multiply
    4,779.60x = 7,163.92 × 2,149.12
  4. Step 4: Simplify right side
    4,779.60x = 15,396,123.75
  5. Step 5: Solve for x
    x = 15,396,123.75/4,779.60
  6. Step 6: Final answer
    x = 3,221.22

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1.5x scale

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.