Home / 3,928.29-5,388.14-3,716.88

Finding the Fourth Proportional to 3,928.29, 5,388.14 and 3,716.88

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Solution

The fourth proportional to 3,928.29, 5,388.14 and 3,716.88 is: 5,098.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.29 : 5,388.14 = 3,716.88 : x
  2. Step 2: Convert to fraction form
    3,928.29/5,388.14 = 3,716.88/x
  3. Step 3: Cross multiply
    3,928.29x = 5,388.14 × 3,716.88
  4. Step 4: Simplify right side
    3,928.29x = 20,027,069.80
  5. Step 5: Solve for x
    x = 20,027,069.80/3,928.29
  6. Step 6: Final answer
    x = 5,098.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.