Home / 2,721.58-3,757.43-1,872.21

Finding the Fourth Proportional to 2,721.58, 3,757.43 and 1,872.21

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Solution

The fourth proportional to 2,721.58, 3,757.43 and 1,872.21 is: 2,584.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.58 : 3,757.43 = 1,872.21 : x
  2. Step 2: Convert to fraction form
    2,721.58/3,757.43 = 1,872.21/x
  3. Step 3: Cross multiply
    2,721.58x = 3,757.43 × 1,872.21
  4. Step 4: Simplify right side
    2,721.58x = 7,034,698.02
  5. Step 5: Solve for x
    x = 7,034,698.02/2,721.58
  6. Step 6: Final answer
    x = 2,584.78

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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.