Home / 8,119.34-12,169.79-3,436.43

Finding the Fourth Proportional to 8,119.34, 12,169.79 and 3,436.43

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Solution

The fourth proportional to 8,119.34, 12,169.79 and 3,436.43 is: 5,150.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.34 : 12,169.79 = 3,436.43 : x
  2. Step 2: Convert to fraction form
    8,119.34/12,169.79 = 3,436.43/x
  3. Step 3: Cross multiply
    8,119.34x = 12,169.79 × 3,436.43
  4. Step 4: Simplify right side
    8,119.34x = 41,820,631.45
  5. Step 5: Solve for x
    x = 41,820,631.45/8,119.34
  6. Step 6: Final answer
    x = 5,150.74

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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.