Home / 3,928.52-5,416.32-3,217.75

Finding the Fourth Proportional to 3,928.52, 5,416.32 and 3,217.75

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Solution

The fourth proportional to 3,928.52, 5,416.32 and 3,217.75 is: 4,436.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.52 : 5,416.32 = 3,217.75 : x
  2. Step 2: Convert to fraction form
    3,928.52/5,416.32 = 3,217.75/x
  3. Step 3: Cross multiply
    3,928.52x = 5,416.32 × 3,217.75
  4. Step 4: Simplify right side
    3,928.52x = 17,428,336.60
  5. Step 5: Solve for x
    x = 17,428,336.60/3,928.52
  6. Step 6: Final answer
    x = 4,436.36

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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.