Home / 8,129.82-12,195.12-2,935.68

Finding the Fourth Proportional to 8,129.82, 12,195.12 and 2,935.68

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Solution

The fourth proportional to 8,129.82, 12,195.12 and 2,935.68 is: 4,403.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.82 : 12,195.12 = 2,935.68 : x
  2. Step 2: Convert to fraction form
    8,129.82/12,195.12 = 2,935.68/x
  3. Step 3: Cross multiply
    8,129.82x = 12,195.12 × 2,935.68
  4. Step 4: Simplify right side
    8,129.82x = 35,800,969.88
  5. Step 5: Solve for x
    x = 35,800,969.88/8,129.82
  6. Step 6: Final answer
    x = 4,403.66

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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.