Home / 2,879.77-4,321.79-2,141.09

Finding the Fourth Proportional to 2,879.77, 4,321.79 and 2,141.09

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Solution

The fourth proportional to 2,879.77, 4,321.79 and 2,141.09 is: 3,213.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.77 : 4,321.79 = 2,141.09 : x
  2. Step 2: Convert to fraction form
    2,879.77/4,321.79 = 2,141.09/x
  3. Step 3: Cross multiply
    2,879.77x = 4,321.79 × 2,141.09
  4. Step 4: Simplify right side
    2,879.77x = 9,253,341.35
  5. Step 5: Solve for x
    x = 9,253,341.35/2,879.77
  6. Step 6: Final answer
    x = 3,213.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.