Home / 3,943.68-5,910.66-2,187.20

Finding the Fourth Proportional to 3,943.68, 5,910.66 and 2,187.20

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Solution

The fourth proportional to 3,943.68, 5,910.66 and 2,187.20 is: 3,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.68 : 5,910.66 = 2,187.20 : x
  2. Step 2: Convert to fraction form
    3,943.68/5,910.66 = 2,187.20/x
  3. Step 3: Cross multiply
    3,943.68x = 5,910.66 × 2,187.20
  4. Step 4: Simplify right side
    3,943.68x = 12,927,795.55
  5. Step 5: Solve for x
    x = 12,927,795.55/3,943.68
  6. Step 6: Final answer
    x = 3,278.10

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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.