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Finding the Fourth Proportional to 2,918.73, 4,384.22 and 2,222.97

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Solution

The fourth proportional to 2,918.73, 4,384.22 and 2,222.97 is: 3,339.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.73 : 4,384.22 = 2,222.97 : x
  2. Step 2: Convert to fraction form
    2,918.73/4,384.22 = 2,222.97/x
  3. Step 3: Cross multiply
    2,918.73x = 4,384.22 × 2,222.97
  4. Step 4: Simplify right side
    2,918.73x = 9,745,978.42
  5. Step 5: Solve for x
    x = 9,745,978.42/2,918.73
  6. Step 6: Final answer
    x = 3,339.12

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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.