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Finding the Fourth Proportional to 4,789.72, 7,184.97 and 1,326.97

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Solution

The fourth proportional to 4,789.72, 7,184.97 and 1,326.97 is: 1,990.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.72 : 7,184.97 = 1,326.97 : x
  2. Step 2: Convert to fraction form
    4,789.72/7,184.97 = 1,326.97/x
  3. Step 3: Cross multiply
    4,789.72x = 7,184.97 × 1,326.97
  4. Step 4: Simplify right side
    4,789.72x = 9,534,239.64
  5. Step 5: Solve for x
    x = 9,534,239.64/4,789.72
  6. Step 6: Final answer
    x = 1,990.56

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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.