Home / 1,912.12-2,867.83-506.55

Finding the Fourth Proportional to 1,912.12, 2,867.83 and 506.55

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Solution

The fourth proportional to 1,912.12, 2,867.83 and 506.55 is: 759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.12 : 2,867.83 = 506.55 : x
  2. Step 2: Convert to fraction form
    1,912.12/2,867.83 = 506.55/x
  3. Step 3: Cross multiply
    1,912.12x = 2,867.83 × 506.55
  4. Step 4: Simplify right side
    1,912.12x = 1,452,686.21
  5. Step 5: Solve for x
    x = 1,452,686.21/1,912.12
  6. Step 6: Final answer
    x = 759.73

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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.