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Finding the Fourth Proportional to 6,211.80, 9,322.80 and 6,163.20

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Solution

The fourth proportional to 6,211.80, 9,322.80 and 6,163.20 is: 9,249.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,211.80 : 9,322.80 = 6,163.20 : x
  2. Step 2: Convert to fraction form
    6,211.80/9,322.80 = 6,163.20/x
  3. Step 3: Cross multiply
    6,211.80x = 9,322.80 × 6,163.20
  4. Step 4: Simplify right side
    6,211.80x = 57,458,280.96
  5. Step 5: Solve for x
    x = 57,458,280.96/6,211.80
  6. Step 6: Final answer
    x = 9,249.86

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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.