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Finding the Fourth Proportional to 7,219.89, 9,958.19 and 5,522.23

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Solution

The fourth proportional to 7,219.89, 9,958.19 and 5,522.23 is: 7,616.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.89 : 9,958.19 = 5,522.23 : x
  2. Step 2: Convert to fraction form
    7,219.89/9,958.19 = 5,522.23/x
  3. Step 3: Cross multiply
    7,219.89x = 9,958.19 × 5,522.23
  4. Step 4: Simplify right side
    7,219.89x = 54,991,415.56
  5. Step 5: Solve for x
    x = 54,991,415.56/7,219.89
  6. Step 6: Final answer
    x = 7,616.66

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Double scale
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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.