Home / 3,943.68-5,913.89-3,161.22

Finding the Fourth Proportional to 3,943.68, 5,913.89 and 3,161.22

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Solution

The fourth proportional to 3,943.68, 5,913.89 and 3,161.22 is: 4,740.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.68 : 5,913.89 = 3,161.22 : x
  2. Step 2: Convert to fraction form
    3,943.68/5,913.89 = 3,161.22/x
  3. Step 3: Cross multiply
    3,943.68x = 5,913.89 × 3,161.22
  4. Step 4: Simplify right side
    3,943.68x = 18,695,107.35
  5. Step 5: Solve for x
    x = 18,695,107.35/3,943.68
  6. Step 6: Final answer
    x = 4,740.52

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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.