Home / 4,990.80-7,480.20-2,067.60

Finding the Fourth Proportional to 4,990.80, 7,480.20 and 2,067.60

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Solution

The fourth proportional to 4,990.80, 7,480.20 and 2,067.60 is: 3,098.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.80 : 7,480.20 = 2,067.60 : x
  2. Step 2: Convert to fraction form
    4,990.80/7,480.20 = 2,067.60/x
  3. Step 3: Cross multiply
    4,990.80x = 7,480.20 × 2,067.60
  4. Step 4: Simplify right side
    4,990.80x = 15,466,061.52
  5. Step 5: Solve for x
    x = 15,466,061.52/4,990.80
  6. Step 6: Final answer
    x = 3,098.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.