Home / 8,121.55-12,181.23-3,443.41

Finding the Fourth Proportional to 8,121.55, 12,181.23 and 3,443.41

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Solution

The fourth proportional to 8,121.55, 12,181.23 and 3,443.41 is: 5,164.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.55 : 12,181.23 = 3,443.41 : x
  2. Step 2: Convert to fraction form
    8,121.55/12,181.23 = 3,443.41/x
  3. Step 3: Cross multiply
    8,121.55x = 12,181.23 × 3,443.41
  4. Step 4: Simplify right side
    8,121.55x = 41,944,969.19
  5. Step 5: Solve for x
    x = 41,944,969.19/8,121.55
  6. Step 6: Final answer
    x = 5,164.65

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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.