Home / 3,857.60-5,321.22-2,531.36

Finding the Fourth Proportional to 3,857.60, 5,321.22 and 2,531.36

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Solution

The fourth proportional to 3,857.60, 5,321.22 and 2,531.36 is: 3,491.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.60 : 5,321.22 = 2,531.36 : x
  2. Step 2: Convert to fraction form
    3,857.60/5,321.22 = 2,531.36/x
  3. Step 3: Cross multiply
    3,857.60x = 5,321.22 × 2,531.36
  4. Step 4: Simplify right side
    3,857.60x = 13,469,923.46
  5. Step 5: Solve for x
    x = 13,469,923.46/3,857.60
  6. Step 6: Final answer
    x = 3,491.79

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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.