Home / 5,687.12-8,520.96-3,091.88

Finding the Fourth Proportional to 5,687.12, 8,520.96 and 3,091.88

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Solution

The fourth proportional to 5,687.12, 8,520.96 and 3,091.88 is: 4,632.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.12 : 8,520.96 = 3,091.88 : x
  2. Step 2: Convert to fraction form
    5,687.12/8,520.96 = 3,091.88/x
  3. Step 3: Cross multiply
    5,687.12x = 8,520.96 × 3,091.88
  4. Step 4: Simplify right side
    5,687.12x = 26,345,785.80
  5. Step 5: Solve for x
    x = 26,345,785.80/5,687.12
  6. Step 6: Final answer
    x = 4,632.54

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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.