Home / 3,122.82-4,313.66-2,540.43

Finding the Fourth Proportional to 3,122.82, 4,313.66 and 2,540.43

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Solution

The fourth proportional to 3,122.82, 4,313.66 and 2,540.43 is: 3,509.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.82 : 4,313.66 = 2,540.43 : x
  2. Step 2: Convert to fraction form
    3,122.82/4,313.66 = 2,540.43/x
  3. Step 3: Cross multiply
    3,122.82x = 4,313.66 × 2,540.43
  4. Step 4: Simplify right side
    3,122.82x = 10,958,538.57
  5. Step 5: Solve for x
    x = 10,958,538.57/3,122.82
  6. Step 6: Final answer
    x = 3,509.18

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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.