Home / 7,414.78-11,122.20-2,150.12

Finding the Fourth Proportional to 7,414.78, 11,122.20 and 2,150.12

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Solution

The fourth proportional to 7,414.78, 11,122.20 and 2,150.12 is: 3,225.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,414.78 : 11,122.20 = 2,150.12 : x
  2. Step 2: Convert to fraction form
    7,414.78/11,122.20 = 2,150.12/x
  3. Step 3: Cross multiply
    7,414.78x = 11,122.20 × 2,150.12
  4. Step 4: Simplify right side
    7,414.78x = 23,914,064.66
  5. Step 5: Solve for x
    x = 23,914,064.66/7,414.78
  6. Step 6: Final answer
    x = 3,225.19

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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.