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Finding the Fourth Proportional to 8,442.94, 12,660.76 and 2,896.82

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Solution

The fourth proportional to 8,442.94, 12,660.76 and 2,896.82 is: 4,343.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.94 : 12,660.76 = 2,896.82 : x
  2. Step 2: Convert to fraction form
    8,442.94/12,660.76 = 2,896.82/x
  3. Step 3: Cross multiply
    8,442.94x = 12,660.76 × 2,896.82
  4. Step 4: Simplify right side
    8,442.94x = 36,675,942.78
  5. Step 5: Solve for x
    x = 36,675,942.78/8,442.94
  6. Step 6: Final answer
    x = 4,343.98

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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.