Home / 2,133.38-3,198.53-1,438.33

Finding the Fourth Proportional to 2,133.38, 3,198.53 and 1,438.33

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Solution

The fourth proportional to 2,133.38, 3,198.53 and 1,438.33 is: 2,156.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.38 : 3,198.53 = 1,438.33 : x
  2. Step 2: Convert to fraction form
    2,133.38/3,198.53 = 1,438.33/x
  3. Step 3: Cross multiply
    2,133.38x = 3,198.53 × 1,438.33
  4. Step 4: Simplify right side
    2,133.38x = 4,600,541.65
  5. Step 5: Solve for x
    x = 4,600,541.65/2,133.38
  6. Step 6: Final answer
    x = 2,156.46

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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.