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Finding the Fourth Proportional to 8,890.64, 13,336.20 and 3,696.92

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Solution

The fourth proportional to 8,890.64, 13,336.20 and 3,696.92 is: 5,545.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.64 : 13,336.20 = 3,696.92 : x
  2. Step 2: Convert to fraction form
    8,890.64/13,336.20 = 3,696.92/x
  3. Step 3: Cross multiply
    8,890.64x = 13,336.20 × 3,696.92
  4. Step 4: Simplify right side
    8,890.64x = 49,302,864.50
  5. Step 5: Solve for x
    x = 49,302,864.50/8,890.64
  6. Step 6: Final answer
    x = 5,545.48

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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.