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Finding the Fourth Proportional to 8,913.39, 13,369.92 and 3,069.87

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Solution

The fourth proportional to 8,913.39, 13,369.92 and 3,069.87 is: 4,604.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.39 : 13,369.92 = 3,069.87 : x
  2. Step 2: Convert to fraction form
    8,913.39/13,369.92 = 3,069.87/x
  3. Step 3: Cross multiply
    8,913.39x = 13,369.92 × 3,069.87
  4. Step 4: Simplify right side
    8,913.39x = 41,043,916.31
  5. Step 5: Solve for x
    x = 41,043,916.31/8,913.39
  6. Step 6: Final answer
    x = 4,604.75

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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.