Home / 2,205.91-3,043.38-1,321.99

Finding the Fourth Proportional to 2,205.91, 3,043.38 and 1,321.99

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Solution

The fourth proportional to 2,205.91, 3,043.38 and 1,321.99 is: 1,823.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.91 : 3,043.38 = 1,321.99 : x
  2. Step 2: Convert to fraction form
    2,205.91/3,043.38 = 1,321.99/x
  3. Step 3: Cross multiply
    2,205.91x = 3,043.38 × 1,321.99
  4. Step 4: Simplify right side
    2,205.91x = 4,023,317.93
  5. Step 5: Solve for x
    x = 4,023,317.93/2,205.91
  6. Step 6: Final answer
    x = 1,823.88

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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.