Home / 3,131.57-4,315.74-2,568.76

Finding the Fourth Proportional to 3,131.57, 4,315.74 and 2,568.76

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Solution

The fourth proportional to 3,131.57, 4,315.74 and 2,568.76 is: 3,540.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.57 : 4,315.74 = 2,568.76 : x
  2. Step 2: Convert to fraction form
    3,131.57/4,315.74 = 2,568.76/x
  3. Step 3: Cross multiply
    3,131.57x = 4,315.74 × 2,568.76
  4. Step 4: Simplify right side
    3,131.57x = 11,086,102.47
  5. Step 5: Solve for x
    x = 11,086,102.47/3,131.57
  6. Step 6: Final answer
    x = 3,540.11

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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.