Home / 2,116.55-3,177.09-1,791.46

Finding the Fourth Proportional to 2,116.55, 3,177.09 and 1,791.46

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Solution

The fourth proportional to 2,116.55, 3,177.09 and 1,791.46 is: 2,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.55 : 3,177.09 = 1,791.46 : x
  2. Step 2: Convert to fraction form
    2,116.55/3,177.09 = 1,791.46/x
  3. Step 3: Cross multiply
    2,116.55x = 3,177.09 × 1,791.46
  4. Step 4: Simplify right side
    2,116.55x = 5,691,620.69
  5. Step 5: Solve for x
    x = 5,691,620.69/2,116.55
  6. Step 6: Final answer
    x = 2,689.11

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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.