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Finding the Fourth Proportional to 8,178.80, 12,268.32 and 2,022.80

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Solution

The fourth proportional to 8,178.80, 12,268.32 and 2,022.80 is: 3,034.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.80 : 12,268.32 = 2,022.80 : x
  2. Step 2: Convert to fraction form
    8,178.80/12,268.32 = 2,022.80/x
  3. Step 3: Cross multiply
    8,178.80x = 12,268.32 × 2,022.80
  4. Step 4: Simplify right side
    8,178.80x = 24,816,357.70
  5. Step 5: Solve for x
    x = 24,816,357.70/8,178.80
  6. Step 6: Final answer
    x = 3,034.23

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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.