Home / 2,879.75-3,956.83-2,289.26

Finding the Fourth Proportional to 2,879.75, 3,956.83 and 2,289.26

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Solution

The fourth proportional to 2,879.75, 3,956.83 and 2,289.26 is: 3,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.75 : 3,956.83 = 2,289.26 : x
  2. Step 2: Convert to fraction form
    2,879.75/3,956.83 = 2,289.26/x
  3. Step 3: Cross multiply
    2,879.75x = 3,956.83 × 2,289.26
  4. Step 4: Simplify right side
    2,879.75x = 9,058,201.20
  5. Step 5: Solve for x
    x = 9,058,201.20/2,879.75
  6. Step 6: Final answer
    x = 3,145.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.