Home / 3,131.46-4,316.90-2,540.97

Finding the Fourth Proportional to 3,131.46, 4,316.90 and 2,540.97

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Solution

The fourth proportional to 3,131.46, 4,316.90 and 2,540.97 is: 3,502.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.46 : 4,316.90 = 2,540.97 : x
  2. Step 2: Convert to fraction form
    3,131.46/4,316.90 = 2,540.97/x
  3. Step 3: Cross multiply
    3,131.46x = 4,316.90 × 2,540.97
  4. Step 4: Simplify right side
    3,131.46x = 10,969,100.69
  5. Step 5: Solve for x
    x = 10,969,100.69/3,131.46
  6. Step 6: Final answer
    x = 3,502.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.