Home / 8,081.16-12,120.39-2,238.36

Finding the Fourth Proportional to 8,081.16, 12,120.39 and 2,238.36

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Solution

The fourth proportional to 8,081.16, 12,120.39 and 2,238.36 is: 3,357.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.16 : 12,120.39 = 2,238.36 : x
  2. Step 2: Convert to fraction form
    8,081.16/12,120.39 = 2,238.36/x
  3. Step 3: Cross multiply
    8,081.16x = 12,120.39 × 2,238.36
  4. Step 4: Simplify right side
    8,081.16x = 27,129,796.16
  5. Step 5: Solve for x
    x = 27,129,796.16/8,081.16
  6. Step 6: Final answer
    x = 3,357.17

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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.