Home / 3,121.55-4,679.24-1,273.96

Finding the Fourth Proportional to 3,121.55, 4,679.24 and 1,273.96

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Solution

The fourth proportional to 3,121.55, 4,679.24 and 1,273.96 is: 1,909.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.55 : 4,679.24 = 1,273.96 : x
  2. Step 2: Convert to fraction form
    3,121.55/4,679.24 = 1,273.96/x
  3. Step 3: Cross multiply
    3,121.55x = 4,679.24 × 1,273.96
  4. Step 4: Simplify right side
    3,121.55x = 5,961,141.19
  5. Step 5: Solve for x
    x = 5,961,141.19/3,121.55
  6. Step 6: Final answer
    x = 1,909.68

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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.