Home / 5,679.90-8,519.85-4,112.55

Finding the Fourth Proportional to 5,679.90, 8,519.85 and 4,112.55

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Solution

The fourth proportional to 5,679.90, 8,519.85 and 4,112.55 is: 6,168.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.90 : 8,519.85 = 4,112.55 : x
  2. Step 2: Convert to fraction form
    5,679.90/8,519.85 = 4,112.55/x
  3. Step 3: Cross multiply
    5,679.90x = 8,519.85 × 4,112.55
  4. Step 4: Simplify right side
    5,679.90x = 35,038,309.12
  5. Step 5: Solve for x
    x = 35,038,309.12/5,679.90
  6. Step 6: Final answer
    x = 6,168.83

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Similar ratio
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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.