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Finding the Fourth Proportional to 8,745.88, 13,120.11 and 3,123.11

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Solution

The fourth proportional to 8,745.88, 13,120.11 and 3,123.11 is: 4,685.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.88 : 13,120.11 = 3,123.11 : x
  2. Step 2: Convert to fraction form
    8,745.88/13,120.11 = 3,123.11/x
  3. Step 3: Cross multiply
    8,745.88x = 13,120.11 × 3,123.11
  4. Step 4: Simplify right side
    8,745.88x = 40,975,546.74
  5. Step 5: Solve for x
    x = 40,975,546.74/8,745.88
  6. Step 6: Final answer
    x = 4,685.13

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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.