Home / 8,112.38-12,168.81-2,268.99

Finding the Fourth Proportional to 8,112.38, 12,168.81 and 2,268.99

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Solution

The fourth proportional to 8,112.38, 12,168.81 and 2,268.99 is: 3,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.38 : 12,168.81 = 2,268.99 : x
  2. Step 2: Convert to fraction form
    8,112.38/12,168.81 = 2,268.99/x
  3. Step 3: Cross multiply
    8,112.38x = 12,168.81 × 2,268.99
  4. Step 4: Simplify right side
    8,112.38x = 27,610,908.20
  5. Step 5: Solve for x
    x = 27,610,908.20/8,112.38
  6. Step 6: Final answer
    x = 3,403.55

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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.