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Finding the Fourth Proportional to 7,374.72, 11,064.48 and 4,919.52

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Solution

The fourth proportional to 7,374.72, 11,064.48 and 4,919.52 is: 7,380.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,374.72 : 11,064.48 = 4,919.52 : x
  2. Step 2: Convert to fraction form
    7,374.72/11,064.48 = 4,919.52/x
  3. Step 3: Cross multiply
    7,374.72x = 11,064.48 × 4,919.52
  4. Step 4: Simplify right side
    7,374.72x = 54,431,930.65
  5. Step 5: Solve for x
    x = 54,431,930.65/7,374.72
  6. Step 6: Final answer
    x = 7,380.88

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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.