Home / 2,839.72-3,912.96-2,801.44

Finding the Fourth Proportional to 2,839.72, 3,912.96 and 2,801.44

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Solution

The fourth proportional to 2,839.72, 3,912.96 and 2,801.44 is: 3,860.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.72 : 3,912.96 = 2,801.44 : x
  2. Step 2: Convert to fraction form
    2,839.72/3,912.96 = 2,801.44/x
  3. Step 3: Cross multiply
    2,839.72x = 3,912.96 × 2,801.44
  4. Step 4: Simplify right side
    2,839.72x = 10,961,922.66
  5. Step 5: Solve for x
    x = 10,961,922.66/2,839.72
  6. Step 6: Final answer
    x = 3,860.21

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1.5x scale

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.