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Finding the Fourth Proportional to 8,763.78, 13,143.69 and 2,523.78

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Solution

The fourth proportional to 8,763.78, 13,143.69 and 2,523.78 is: 3,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.78 : 13,143.69 = 2,523.78 : x
  2. Step 2: Convert to fraction form
    8,763.78/13,143.69 = 2,523.78/x
  3. Step 3: Cross multiply
    8,763.78x = 13,143.69 × 2,523.78
  4. Step 4: Simplify right side
    8,763.78x = 33,171,781.95
  5. Step 5: Solve for x
    x = 33,171,781.95/8,763.78
  6. Step 6: Final answer
    x = 3,785.10

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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.