Home / 2,721.88-3,758.39-2,217.80

Finding the Fourth Proportional to 2,721.88, 3,758.39 and 2,217.80

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Solution

The fourth proportional to 2,721.88, 3,758.39 and 2,217.80 is: 3,062.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.88 : 3,758.39 = 2,217.80 : x
  2. Step 2: Convert to fraction form
    2,721.88/3,758.39 = 2,217.80/x
  3. Step 3: Cross multiply
    2,721.88x = 3,758.39 × 2,217.80
  4. Step 4: Simplify right side
    2,721.88x = 8,335,355.72
  5. Step 5: Solve for x
    x = 8,335,355.72/2,721.88
  6. Step 6: Final answer
    x = 3,062.36

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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.