Home / 3,131.55-4,697.39-1,399.83

Finding the Fourth Proportional to 3,131.55, 4,697.39 and 1,399.83

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Solution

The fourth proportional to 3,131.55, 4,697.39 and 1,399.83 is: 2,099.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.55 : 4,697.39 = 1,399.83 : x
  2. Step 2: Convert to fraction form
    3,131.55/4,697.39 = 1,399.83/x
  3. Step 3: Cross multiply
    3,131.55x = 4,697.39 × 1,399.83
  4. Step 4: Simplify right side
    3,131.55x = 6,575,540.44
  5. Step 5: Solve for x
    x = 6,575,540.44/3,131.55
  6. Step 6: Final answer
    x = 2,099.77

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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.