Home / 4,081.96-6,122.49-1,120.63

Finding the Fourth Proportional to 4,081.96, 6,122.49 and 1,120.63

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Solution

The fourth proportional to 4,081.96, 6,122.49 and 1,120.63 is: 1,680.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.96 : 6,122.49 = 1,120.63 : x
  2. Step 2: Convert to fraction form
    4,081.96/6,122.49 = 1,120.63/x
  3. Step 3: Cross multiply
    4,081.96x = 6,122.49 × 1,120.63
  4. Step 4: Simplify right side
    4,081.96x = 6,861,025.06
  5. Step 5: Solve for x
    x = 6,861,025.06/4,081.96
  6. Step 6: Final answer
    x = 1,680.82

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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.