Home / 9,198.16-12,690.60-5,218.96

Finding the Fourth Proportional to 9,198.16, 12,690.60 and 5,218.96

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Solution

The fourth proportional to 9,198.16, 12,690.60 and 5,218.96 is: 7,200.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,198.16 : 12,690.60 = 5,218.96 : x
  2. Step 2: Convert to fraction form
    9,198.16/12,690.60 = 5,218.96/x
  3. Step 3: Cross multiply
    9,198.16x = 12,690.60 × 5,218.96
  4. Step 4: Simplify right side
    9,198.16x = 66,231,733.78
  5. Step 5: Solve for x
    x = 66,231,733.78/9,198.16
  6. Step 6: Final answer
    x = 7,200.54

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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.