Home / 3,811.05-5,716.71-1,213.92

Finding the Fourth Proportional to 3,811.05, 5,716.71 and 1,213.92

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Solution

The fourth proportional to 3,811.05, 5,716.71 and 1,213.92 is: 1,820.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.05 : 5,716.71 = 1,213.92 : x
  2. Step 2: Convert to fraction form
    3,811.05/5,716.71 = 1,213.92/x
  3. Step 3: Cross multiply
    3,811.05x = 5,716.71 × 1,213.92
  4. Step 4: Simplify right side
    3,811.05x = 6,939,628.60
  5. Step 5: Solve for x
    x = 6,939,628.60/3,811.05
  6. Step 6: Final answer
    x = 1,820.92

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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.