Home / 8,745.20-13,119.78-3,198.52

Finding the Fourth Proportional to 8,745.20, 13,119.78 and 3,198.52

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Solution

The fourth proportional to 8,745.20, 13,119.78 and 3,198.52 is: 4,798.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.20 : 13,119.78 = 3,198.52 : x
  2. Step 2: Convert to fraction form
    8,745.20/13,119.78 = 3,198.52/x
  3. Step 3: Cross multiply
    8,745.20x = 13,119.78 × 3,198.52
  4. Step 4: Simplify right side
    8,745.20x = 41,963,878.73
  5. Step 5: Solve for x
    x = 41,963,878.73/8,745.20
  6. Step 6: Final answer
    x = 4,798.50

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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.