Home / 5,391.31-8,087.79-1,927.75

Finding the Fourth Proportional to 5,391.31, 8,087.79 and 1,927.75

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Solution

The fourth proportional to 5,391.31, 8,087.79 and 1,927.75 is: 2,891.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.31 : 8,087.79 = 1,927.75 : x
  2. Step 2: Convert to fraction form
    5,391.31/8,087.79 = 1,927.75/x
  3. Step 3: Cross multiply
    5,391.31x = 8,087.79 × 1,927.75
  4. Step 4: Simplify right side
    5,391.31x = 15,591,237.17
  5. Step 5: Solve for x
    x = 15,591,237.17/5,391.31
  6. Step 6: Final answer
    x = 2,891.92

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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.