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Finding the Fourth Proportional to 2,879.44, 3,974.28 and 2,412.88

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Solution

The fourth proportional to 2,879.44, 3,974.28 and 2,412.88 is: 3,330.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.44 : 3,974.28 = 2,412.88 : x
  2. Step 2: Convert to fraction form
    2,879.44/3,974.28 = 2,412.88/x
  3. Step 3: Cross multiply
    2,879.44x = 3,974.28 × 2,412.88
  4. Step 4: Simplify right side
    2,879.44x = 9,589,460.73
  5. Step 5: Solve for x
    x = 9,589,460.73/2,879.44
  6. Step 6: Final answer
    x = 3,330.32

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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.