Home / 6,720.20-10,079.90-1,789.96

Finding the Fourth Proportional to 6,720.20, 10,079.90 and 1,789.96

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Solution

The fourth proportional to 6,720.20, 10,079.90 and 1,789.96 is: 2,684.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.20 : 10,079.90 = 1,789.96 : x
  2. Step 2: Convert to fraction form
    6,720.20/10,079.90 = 1,789.96/x
  3. Step 3: Cross multiply
    6,720.20x = 10,079.90 × 1,789.96
  4. Step 4: Simplify right side
    6,720.20x = 18,042,617.80
  5. Step 5: Solve for x
    x = 18,042,617.80/6,720.20
  6. Step 6: Final answer
    x = 2,684.83

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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.