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Finding the Fourth Proportional to 7,458.78, 11,189.40 and 2,529

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Solution

The fourth proportional to 7,458.78, 11,189.40 and 2,529 is: 3,793.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,458.78 : 11,189.40 = 2,529 : x
  2. Step 2: Convert to fraction form
    7,458.78/11,189.40 = 2,529/x
  3. Step 3: Cross multiply
    7,458.78x = 11,189.40 × 2,529
  4. Step 4: Simplify right side
    7,458.78x = 28,297,992.60
  5. Step 5: Solve for x
    x = 28,297,992.60/7,458.78
  6. Step 6: Final answer
    x = 3,793.92

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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.