Home / 1,428.27-2,137.73-1,231.44

Finding the Fourth Proportional to 1,428.27, 2,137.73 and 1,231.44

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Solution

The fourth proportional to 1,428.27, 2,137.73 and 1,231.44 is: 1,843.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.27 : 2,137.73 = 1,231.44 : x
  2. Step 2: Convert to fraction form
    1,428.27/2,137.73 = 1,231.44/x
  3. Step 3: Cross multiply
    1,428.27x = 2,137.73 × 1,231.44
  4. Step 4: Simplify right side
    1,428.27x = 2,632,480.07
  5. Step 5: Solve for x
    x = 2,632,480.07/1,428.27
  6. Step 6: Final answer
    x = 1,843.12

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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.