Home / 8,081.45-12,120.80-2,236.69

Finding the Fourth Proportional to 8,081.45, 12,120.80 and 2,236.69

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Solution

The fourth proportional to 8,081.45, 12,120.80 and 2,236.69 is: 3,354.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.45 : 12,120.80 = 2,236.69 : x
  2. Step 2: Convert to fraction form
    8,081.45/12,120.80 = 2,236.69/x
  3. Step 3: Cross multiply
    8,081.45x = 12,120.80 × 2,236.69
  4. Step 4: Simplify right side
    8,081.45x = 27,110,430.67
  5. Step 5: Solve for x
    x = 27,110,430.67/8,081.45
  6. Step 6: Final answer
    x = 3,354.65

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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.