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Finding the Fourth Proportional to 7,338.80, 11,010.90 and 2,956.70

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Solution

The fourth proportional to 7,338.80, 11,010.90 and 2,956.70 is: 4,436.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.80 : 11,010.90 = 2,956.70 : x
  2. Step 2: Convert to fraction form
    7,338.80/11,010.90 = 2,956.70/x
  3. Step 3: Cross multiply
    7,338.80x = 11,010.90 × 2,956.70
  4. Step 4: Simplify right side
    7,338.80x = 32,555,928.03
  5. Step 5: Solve for x
    x = 32,555,928.03/7,338.80
  6. Step 6: Final answer
    x = 4,436.14

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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.