Home / 3,198.90-4,798.81-1,007.80

Finding the Fourth Proportional to 3,198.90, 4,798.81 and 1,007.80

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Solution

The fourth proportional to 3,198.90, 4,798.81 and 1,007.80 is: 1,511.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.90 : 4,798.81 = 1,007.80 : x
  2. Step 2: Convert to fraction form
    3,198.90/4,798.81 = 1,007.80/x
  3. Step 3: Cross multiply
    3,198.90x = 4,798.81 × 1,007.80
  4. Step 4: Simplify right side
    3,198.90x = 4,836,250.20
  5. Step 5: Solve for x
    x = 4,836,250.20/3,198.90
  6. Step 6: Final answer
    x = 1,511.85

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1.5x scale

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.