Home / 2,845.44-3,928.62-2,181.12

Finding the Fourth Proportional to 2,845.44, 3,928.62 and 2,181.12

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Solution

The fourth proportional to 2,845.44, 3,928.62 and 2,181.12 is: 3,011.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.44 : 3,928.62 = 2,181.12 : x
  2. Step 2: Convert to fraction form
    2,845.44/3,928.62 = 2,181.12/x
  3. Step 3: Cross multiply
    2,845.44x = 3,928.62 × 2,181.12
  4. Step 4: Simplify right side
    2,845.44x = 8,568,791.65
  5. Step 5: Solve for x
    x = 8,568,791.65/2,845.44
  6. Step 6: Final answer
    x = 3,011.41

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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.