Home / 2,120.41-3,182.57-1,081.16

Finding the Fourth Proportional to 2,120.41, 3,182.57 and 1,081.16

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Solution

The fourth proportional to 2,120.41, 3,182.57 and 1,081.16 is: 1,622.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.41 : 3,182.57 = 1,081.16 : x
  2. Step 2: Convert to fraction form
    2,120.41/3,182.57 = 1,081.16/x
  3. Step 3: Cross multiply
    2,120.41x = 3,182.57 × 1,081.16
  4. Step 4: Simplify right side
    2,120.41x = 3,440,867.38
  5. Step 5: Solve for x
    x = 3,440,867.38/2,120.41
  6. Step 6: Final answer
    x = 1,622.74

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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.