Home / 2,879.39-3,972.38-1,759.88

Finding the Fourth Proportional to 2,879.39, 3,972.38 and 1,759.88

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Solution

The fourth proportional to 2,879.39, 3,972.38 and 1,759.88 is: 2,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.39 : 3,972.38 = 1,759.88 : x
  2. Step 2: Convert to fraction form
    2,879.39/3,972.38 = 1,759.88/x
  3. Step 3: Cross multiply
    2,879.39x = 3,972.38 × 1,759.88
  4. Step 4: Simplify right side
    2,879.39x = 6,990,883.45
  5. Step 5: Solve for x
    x = 6,990,883.45/2,879.39
  6. Step 6: Final answer
    x = 2,427.91

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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.