Home / 2,081.13-3,122.28-694.59

Finding the Fourth Proportional to 2,081.13, 3,122.28 and 694.59

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Solution

The fourth proportional to 2,081.13, 3,122.28 and 694.59 is: 1,042.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.13 : 3,122.28 = 694.59 : x
  2. Step 2: Convert to fraction form
    2,081.13/3,122.28 = 694.59/x
  3. Step 3: Cross multiply
    2,081.13x = 3,122.28 × 694.59
  4. Step 4: Simplify right side
    2,081.13x = 2,168,704.47
  5. Step 5: Solve for x
    x = 2,168,704.47/2,081.13
  6. Step 6: Final answer
    x = 1,042.08

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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.