Home / 3,928.36-5,420.02-2,531.92

Finding the Fourth Proportional to 3,928.36, 5,420.02 and 2,531.92

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Solution

The fourth proportional to 3,928.36, 5,420.02 and 2,531.92 is: 3,493.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.36 : 5,420.02 = 2,531.92 : x
  2. Step 2: Convert to fraction form
    3,928.36/5,420.02 = 2,531.92/x
  3. Step 3: Cross multiply
    3,928.36x = 5,420.02 × 2,531.92
  4. Step 4: Simplify right side
    3,928.36x = 13,723,057.04
  5. Step 5: Solve for x
    x = 13,723,057.04/3,928.36
  6. Step 6: Final answer
    x = 3,493.33

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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.