Home / 8,081.60-12,119.92-2,236.80

Finding the Fourth Proportional to 8,081.60, 12,119.92 and 2,236.80

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Solution

The fourth proportional to 8,081.60, 12,119.92 and 2,236.80 is: 3,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.60 : 12,119.92 = 2,236.80 : x
  2. Step 2: Convert to fraction form
    8,081.60/12,119.92 = 2,236.80/x
  3. Step 3: Cross multiply
    8,081.60x = 12,119.92 × 2,236.80
  4. Step 4: Simplify right side
    8,081.60x = 27,109,837.06
  5. Step 5: Solve for x
    x = 27,109,837.06/8,081.60
  6. Step 6: Final answer
    x = 3,354.51

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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.