Home / 2,231.35-3,079.22-1,223.00

Finding the Fourth Proportional to 2,231.35, 3,079.22 and 1,223.00

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Solution

The fourth proportional to 2,231.35, 3,079.22 and 1,223.00 is: 1,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.35 : 3,079.22 = 1,223.00 : x
  2. Step 2: Convert to fraction form
    2,231.35/3,079.22 = 1,223.00/x
  3. Step 3: Cross multiply
    2,231.35x = 3,079.22 × 1,223.00
  4. Step 4: Simplify right side
    2,231.35x = 3,765,876.10
  5. Step 5: Solve for x
    x = 3,765,876.10/2,231.35
  6. Step 6: Final answer
    x = 1,687.71

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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.