Home / 9,198.78-12,693.92-5,219.81

Finding the Fourth Proportional to 9,198.78, 12,693.92 and 5,219.81

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Solution

The fourth proportional to 9,198.78, 12,693.92 and 5,219.81 is: 7,203.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,198.78 : 12,693.92 = 5,219.81 : x
  2. Step 2: Convert to fraction form
    9,198.78/12,693.92 = 5,219.81/x
  3. Step 3: Cross multiply
    9,198.78x = 12,693.92 × 5,219.81
  4. Step 4: Simplify right side
    9,198.78x = 66,259,850.56
  5. Step 5: Solve for x
    x = 66,259,850.56/9,198.78
  6. Step 6: Final answer
    x = 7,203.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.