Home / 2,245.14-3,111.38-2,213.78

Finding the Fourth Proportional to 2,245.14, 3,111.38 and 2,213.78

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Solution

The fourth proportional to 2,245.14, 3,111.38 and 2,213.78 is: 3,067.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.14 : 3,111.38 = 2,213.78 : x
  2. Step 2: Convert to fraction form
    2,245.14/3,111.38 = 2,213.78/x
  3. Step 3: Cross multiply
    2,245.14x = 3,111.38 × 2,213.78
  4. Step 4: Simplify right side
    2,245.14x = 6,887,899.75
  5. Step 5: Solve for x
    x = 6,887,899.75/2,245.14
  6. Step 6: Final answer
    x = 3,067.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.