Home / 3,928.36-5,422.50-2,531.56

Finding the Fourth Proportional to 3,928.36, 5,422.50 and 2,531.56

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Solution

The fourth proportional to 3,928.36, 5,422.50 and 2,531.56 is: 3,494.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.36 : 5,422.50 = 2,531.56 : x
  2. Step 2: Convert to fraction form
    3,928.36/5,422.50 = 2,531.56/x
  3. Step 3: Cross multiply
    3,928.36x = 5,422.50 × 2,531.56
  4. Step 4: Simplify right side
    3,928.36x = 13,727,384.10
  5. Step 5: Solve for x
    x = 13,727,384.10/3,928.36
  6. Step 6: Final answer
    x = 3,494.43

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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.