Home / 2,081.24-3,122.08-694.09

Finding the Fourth Proportional to 2,081.24, 3,122.08 and 694.09

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Solution

The fourth proportional to 2,081.24, 3,122.08 and 694.09 is: 1,041.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.24 : 3,122.08 = 694.09 : x
  2. Step 2: Convert to fraction form
    2,081.24/3,122.08 = 694.09/x
  3. Step 3: Cross multiply
    2,081.24x = 3,122.08 × 694.09
  4. Step 4: Simplify right side
    2,081.24x = 2,167,006.67
  5. Step 5: Solve for x
    x = 2,167,006.67/2,081.24
  6. Step 6: Final answer
    x = 1,041.21

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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.