Home / 3,520.80-4,859.76-2,029.78

Finding the Fourth Proportional to 3,520.80, 4,859.76 and 2,029.78

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Solution

The fourth proportional to 3,520.80, 4,859.76 and 2,029.78 is: 2,801.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.80 : 4,859.76 = 2,029.78 : x
  2. Step 2: Convert to fraction form
    3,520.80/4,859.76 = 2,029.78/x
  3. Step 3: Cross multiply
    3,520.80x = 4,859.76 × 2,029.78
  4. Step 4: Simplify right side
    3,520.80x = 9,864,243.65
  5. Step 5: Solve for x
    x = 9,864,243.65/3,520.80
  6. Step 6: Final answer
    x = 2,801.71

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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.