Home / 3,083.40-4,252.25-2,020.78

Finding the Fourth Proportional to 3,083.40, 4,252.25 and 2,020.78

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Solution

The fourth proportional to 3,083.40, 4,252.25 and 2,020.78 is: 2,786.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,083.40 : 4,252.25 = 2,020.78 : x
  2. Step 2: Convert to fraction form
    3,083.40/4,252.25 = 2,020.78/x
  3. Step 3: Cross multiply
    3,083.40x = 4,252.25 × 2,020.78
  4. Step 4: Simplify right side
    3,083.40x = 8,592,844.55
  5. Step 5: Solve for x
    x = 8,592,844.55/3,083.40
  6. Step 6: Final answer
    x = 2,786.81

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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.