Home / 8,784.54-12,121.83-5,198.70

Finding the Fourth Proportional to 8,784.54, 12,121.83 and 5,198.70

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Solution

The fourth proportional to 8,784.54, 12,121.83 and 5,198.70 is: 7,173.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.54 : 12,121.83 = 5,198.70 : x
  2. Step 2: Convert to fraction form
    8,784.54/12,121.83 = 5,198.70/x
  3. Step 3: Cross multiply
    8,784.54x = 12,121.83 × 5,198.70
  4. Step 4: Simplify right side
    8,784.54x = 63,017,757.62
  5. Step 5: Solve for x
    x = 63,017,757.62/8,784.54
  6. Step 6: Final answer
    x = 7,173.71

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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.