Home / 5,161.41-7,742.12-2,081.25

Finding the Fourth Proportional to 5,161.41, 7,742.12 and 2,081.25

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Solution

The fourth proportional to 5,161.41, 7,742.12 and 2,081.25 is: 3,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.41 : 7,742.12 = 2,081.25 : x
  2. Step 2: Convert to fraction form
    5,161.41/7,742.12 = 2,081.25/x
  3. Step 3: Cross multiply
    5,161.41x = 7,742.12 × 2,081.25
  4. Step 4: Simplify right side
    5,161.41x = 16,113,276.84
  5. Step 5: Solve for x
    x = 16,113,276.84/5,161.41
  6. Step 6: Final answer
    x = 3,121.88

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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.