Home / 2,190.75-3,286.08-547.29

Finding the Fourth Proportional to 2,190.75, 3,286.08 and 547.29

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Solution

The fourth proportional to 2,190.75, 3,286.08 and 547.29 is: 820.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.75 : 3,286.08 = 547.29 : x
  2. Step 2: Convert to fraction form
    2,190.75/3,286.08 = 547.29/x
  3. Step 3: Cross multiply
    2,190.75x = 3,286.08 × 547.29
  4. Step 4: Simplify right side
    2,190.75x = 1,798,438.72
  5. Step 5: Solve for x
    x = 1,798,438.72/2,190.75
  6. Step 6: Final answer
    x = 820.92

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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.