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Finding the Fourth Proportional to 8,093.80, 12,140.10 and 3,412.60

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Solution

The fourth proportional to 8,093.80, 12,140.10 and 3,412.60 is: 5,118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,093.80 : 12,140.10 = 3,412.60 : x
  2. Step 2: Convert to fraction form
    8,093.80/12,140.10 = 3,412.60/x
  3. Step 3: Cross multiply
    8,093.80x = 12,140.10 × 3,412.60
  4. Step 4: Simplify right side
    8,093.80x = 41,429,305.26
  5. Step 5: Solve for x
    x = 41,429,305.26/8,093.80
  6. Step 6: Final answer
    x = 5,118.65

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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.