Home / 2,728.88-3,757.41-2,133.79

Finding the Fourth Proportional to 2,728.88, 3,757.41 and 2,133.79

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Solution

The fourth proportional to 2,728.88, 3,757.41 and 2,133.79 is: 2,938.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.88 : 3,757.41 = 2,133.79 : x
  2. Step 2: Convert to fraction form
    2,728.88/3,757.41 = 2,133.79/x
  3. Step 3: Cross multiply
    2,728.88x = 3,757.41 × 2,133.79
  4. Step 4: Simplify right side
    2,728.88x = 8,017,523.88
  5. Step 5: Solve for x
    x = 8,017,523.88/2,728.88
  6. Step 6: Final answer
    x = 2,938.03

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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.