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Finding the Fourth Proportional to 10,868, 16,302 and 2,660

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Solution

The fourth proportional to 10,868, 16,302 and 2,660 is: 3,990

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,868 : 16,302 = 2,660 : x
  2. Step 2: Convert to fraction form
    10,868/16,302 = 2,660/x
  3. Step 3: Cross multiply
    10,868x = 16,302 × 2,660
  4. Step 4: Simplify right side
    10,868x = 43,363,320
  5. Step 5: Solve for x
    x = 43,363,320/10,868
  6. Step 6: Final answer
    x = 3,990

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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.