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Finding the Fourth Proportional to 7,957.88, 11,938.62 and 4,451.39

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Solution

The fourth proportional to 7,957.88, 11,938.62 and 4,451.39 is: 6,678.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.88 : 11,938.62 = 4,451.39 : x
  2. Step 2: Convert to fraction form
    7,957.88/11,938.62 = 4,451.39/x
  3. Step 3: Cross multiply
    7,957.88x = 11,938.62 × 4,451.39
  4. Step 4: Simplify right side
    7,957.88x = 53,143,453.68
  5. Step 5: Solve for x
    x = 53,143,453.68/7,957.88
  6. Step 6: Final answer
    x = 6,678.09

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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.