Home / 3,928.92-5,421.82-2,335.32

Finding the Fourth Proportional to 3,928.92, 5,421.82 and 2,335.32

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Solution

The fourth proportional to 3,928.92, 5,421.82 and 2,335.32 is: 3,222.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.92 : 5,421.82 = 2,335.32 : x
  2. Step 2: Convert to fraction form
    3,928.92/5,421.82 = 2,335.32/x
  3. Step 3: Cross multiply
    3,928.92x = 5,421.82 × 2,335.32
  4. Step 4: Simplify right side
    3,928.92x = 12,661,684.68
  5. Step 5: Solve for x
    x = 12,661,684.68/3,928.92
  6. Step 6: Final answer
    x = 3,222.69

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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.