Home / 3,811.60-5,717.04-1,961.74

Finding the Fourth Proportional to 3,811.60, 5,717.04 and 1,961.74

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Solution

The fourth proportional to 3,811.60, 5,717.04 and 1,961.74 is: 2,942.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.60 : 5,717.04 = 1,961.74 : x
  2. Step 2: Convert to fraction form
    3,811.60/5,717.04 = 1,961.74/x
  3. Step 3: Cross multiply
    3,811.60x = 5,717.04 × 1,961.74
  4. Step 4: Simplify right side
    3,811.60x = 11,215,346.05
  5. Step 5: Solve for x
    x = 11,215,346.05/3,811.60
  6. Step 6: Final answer
    x = 2,942.42

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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.