Home / 5,481.60-8,198.40-4,900.80

Finding the Fourth Proportional to 5,481.60, 8,198.40 and 4,900.80

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Solution

The fourth proportional to 5,481.60, 8,198.40 and 4,900.80 is: 7,329.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.60 : 8,198.40 = 4,900.80 : x
  2. Step 2: Convert to fraction form
    5,481.60/8,198.40 = 4,900.80/x
  3. Step 3: Cross multiply
    5,481.60x = 8,198.40 × 4,900.80
  4. Step 4: Simplify right side
    5,481.60x = 40,178,718.72
  5. Step 5: Solve for x
    x = 40,178,718.72/5,481.60
  6. Step 6: Final answer
    x = 7,329.74

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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.