Home / 2,786.91-4,181.99-2,198.31

Finding the Fourth Proportional to 2,786.91, 4,181.99 and 2,198.31

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Solution

The fourth proportional to 2,786.91, 4,181.99 and 2,198.31 is: 3,298.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.91 : 4,181.99 = 2,198.31 : x
  2. Step 2: Convert to fraction form
    2,786.91/4,181.99 = 2,198.31/x
  3. Step 3: Cross multiply
    2,786.91x = 4,181.99 × 2,198.31
  4. Step 4: Simplify right side
    2,786.91x = 9,193,299.45
  5. Step 5: Solve for x
    x = 9,193,299.45/2,786.91
  6. Step 6: Final answer
    x = 3,298.74

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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.