Home / 8,081.20-12,121.80-2,237.32

Finding the Fourth Proportional to 8,081.20, 12,121.80 and 2,237.32

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Solution

The fourth proportional to 8,081.20, 12,121.80 and 2,237.32 is: 3,355.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.20 : 12,121.80 = 2,237.32 : x
  2. Step 2: Convert to fraction form
    8,081.20/12,121.80 = 2,237.32/x
  3. Step 3: Cross multiply
    8,081.20x = 12,121.80 × 2,237.32
  4. Step 4: Simplify right side
    8,081.20x = 27,120,345.58
  5. Step 5: Solve for x
    x = 27,120,345.58/8,081.20
  6. Step 6: Final answer
    x = 3,355.98

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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.