Home / 8,121.76-12,185.60-3,442.96

Finding the Fourth Proportional to 8,121.76, 12,185.60 and 3,442.96

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Solution

The fourth proportional to 8,121.76, 12,185.60 and 3,442.96 is: 5,165.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.76 : 12,185.60 = 3,442.96 : x
  2. Step 2: Convert to fraction form
    8,121.76/12,185.60 = 3,442.96/x
  3. Step 3: Cross multiply
    8,121.76x = 12,185.60 × 3,442.96
  4. Step 4: Simplify right side
    8,121.76x = 41,954,533.38
  5. Step 5: Solve for x
    x = 41,954,533.38/8,121.76
  6. Step 6: Final answer
    x = 5,165.69

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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.