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Finding the Fourth Proportional to 7,211.92, 9,958.08 and 5,644.48

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Solution

The fourth proportional to 7,211.92, 9,958.08 and 5,644.48 is: 7,793.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.92 : 9,958.08 = 5,644.48 : x
  2. Step 2: Convert to fraction form
    7,211.92/9,958.08 = 5,644.48/x
  3. Step 3: Cross multiply
    7,211.92x = 9,958.08 × 5,644.48
  4. Step 4: Simplify right side
    7,211.92x = 56,208,183.40
  5. Step 5: Solve for x
    x = 56,208,183.40/7,211.92
  6. Step 6: Final answer
    x = 7,793.79

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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.