Home / 3,187.48-4,399.12-1,928.97

Finding the Fourth Proportional to 3,187.48, 4,399.12 and 1,928.97

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Solution

The fourth proportional to 3,187.48, 4,399.12 and 1,928.97 is: 2,662.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.48 : 4,399.12 = 1,928.97 : x
  2. Step 2: Convert to fraction form
    3,187.48/4,399.12 = 1,928.97/x
  3. Step 3: Cross multiply
    3,187.48x = 4,399.12 × 1,928.97
  4. Step 4: Simplify right side
    3,187.48x = 8,485,780.44
  5. Step 5: Solve for x
    x = 8,485,780.44/3,187.48
  6. Step 6: Final answer
    x = 2,662.22

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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.