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Finding the Fourth Proportional to 11,271.92, 16,908.88 and 2,951.92

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Solution

The fourth proportional to 11,271.92, 16,908.88 and 2,951.92 is: 4,428.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.92 : 16,908.88 = 2,951.92 : x
  2. Step 2: Convert to fraction form
    11,271.92/16,908.88 = 2,951.92/x
  3. Step 3: Cross multiply
    11,271.92x = 16,908.88 × 2,951.92
  4. Step 4: Simplify right side
    11,271.92x = 49,913,661.05
  5. Step 5: Solve for x
    x = 49,913,661.05/11,271.92
  6. Step 6: Final answer
    x = 4,428.14

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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.