Home / 3,941.31-5,439.02-2,172.91

Finding the Fourth Proportional to 3,941.31, 5,439.02 and 2,172.91

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Solution

The fourth proportional to 3,941.31, 5,439.02 and 2,172.91 is: 2,998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.31 : 5,439.02 = 2,172.91 : x
  2. Step 2: Convert to fraction form
    3,941.31/5,439.02 = 2,172.91/x
  3. Step 3: Cross multiply
    3,941.31x = 5,439.02 × 2,172.91
  4. Step 4: Simplify right side
    3,941.31x = 11,818,500.95
  5. Step 5: Solve for x
    x = 11,818,500.95/3,941.31
  6. Step 6: Final answer
    x = 2,998.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.