Home / 3,081.28-4,252.60-1,961.86

Finding the Fourth Proportional to 3,081.28, 4,252.60 and 1,961.86

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Solution

The fourth proportional to 3,081.28, 4,252.60 and 1,961.86 is: 2,707.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.28 : 4,252.60 = 1,961.86 : x
  2. Step 2: Convert to fraction form
    3,081.28/4,252.60 = 1,961.86/x
  3. Step 3: Cross multiply
    3,081.28x = 4,252.60 × 1,961.86
  4. Step 4: Simplify right side
    3,081.28x = 8,343,005.84
  5. Step 5: Solve for x
    x = 8,343,005.84/3,081.28
  6. Step 6: Final answer
    x = 2,707.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.