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Finding the Fourth Proportional to 8,352.74, 12,529.20 and 3,418.94

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Solution

The fourth proportional to 8,352.74, 12,529.20 and 3,418.94 is: 5,128.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,352.74 : 12,529.20 = 3,418.94 : x
  2. Step 2: Convert to fraction form
    8,352.74/12,529.20 = 3,418.94/x
  3. Step 3: Cross multiply
    8,352.74x = 12,529.20 × 3,418.94
  4. Step 4: Simplify right side
    8,352.74x = 42,836,583.05
  5. Step 5: Solve for x
    x = 42,836,583.05/8,352.74
  6. Step 6: Final answer
    x = 5,128.45

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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.