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Finding the Fourth Proportional to 8,868.72, 13,302.99 and 2,628.78

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Solution

The fourth proportional to 8,868.72, 13,302.99 and 2,628.78 is: 3,943.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.72 : 13,302.99 = 2,628.78 : x
  2. Step 2: Convert to fraction form
    8,868.72/13,302.99 = 2,628.78/x
  3. Step 3: Cross multiply
    8,868.72x = 13,302.99 × 2,628.78
  4. Step 4: Simplify right side
    8,868.72x = 34,970,634.05
  5. Step 5: Solve for x
    x = 34,970,634.05/8,868.72
  6. Step 6: Final answer
    x = 3,943.14

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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.