Home / 2,879.08-3,972.01-1,619.85

Finding the Fourth Proportional to 2,879.08, 3,972.01 and 1,619.85

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Solution

The fourth proportional to 2,879.08, 3,972.01 and 1,619.85 is: 2,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.08 : 3,972.01 = 1,619.85 : x
  2. Step 2: Convert to fraction form
    2,879.08/3,972.01 = 1,619.85/x
  3. Step 3: Cross multiply
    2,879.08x = 3,972.01 × 1,619.85
  4. Step 4: Simplify right side
    2,879.08x = 6,434,060.40
  5. Step 5: Solve for x
    x = 6,434,060.40/2,879.08
  6. Step 6: Final answer
    x = 2,234.76

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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.