Home / 8,121.47-12,181.25-3,442.16

Finding the Fourth Proportional to 8,121.47, 12,181.25 and 3,442.16

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Solution

The fourth proportional to 8,121.47, 12,181.25 and 3,442.16 is: 5,162.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.47 : 12,181.25 = 3,442.16 : x
  2. Step 2: Convert to fraction form
    8,121.47/12,181.25 = 3,442.16/x
  3. Step 3: Cross multiply
    8,121.47x = 12,181.25 × 3,442.16
  4. Step 4: Simplify right side
    8,121.47x = 41,929,850.56
  5. Step 5: Solve for x
    x = 41,929,850.56/8,121.47
  6. Step 6: Final answer
    x = 5,162.84

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1.5x scale

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.