Home / 5,291.38-7,936.52-2,171.72

Finding the Fourth Proportional to 5,291.38, 7,936.52 and 2,171.72

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Solution

The fourth proportional to 5,291.38, 7,936.52 and 2,171.72 is: 3,257.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.38 : 7,936.52 = 2,171.72 : x
  2. Step 2: Convert to fraction form
    5,291.38/7,936.52 = 2,171.72/x
  3. Step 3: Cross multiply
    5,291.38x = 7,936.52 × 2,171.72
  4. Step 4: Simplify right side
    5,291.38x = 17,235,863.55
  5. Step 5: Solve for x
    x = 17,235,863.55/5,291.38
  6. Step 6: Final answer
    x = 3,257.35

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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.