Home / 8,135.10-12,204.82-3,455.32

Finding the Fourth Proportional to 8,135.10, 12,204.82 and 3,455.32

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Solution

The fourth proportional to 8,135.10, 12,204.82 and 3,455.32 is: 5,183.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.10 : 12,204.82 = 3,455.32 : x
  2. Step 2: Convert to fraction form
    8,135.10/12,204.82 = 3,455.32/x
  3. Step 3: Cross multiply
    8,135.10x = 12,204.82 × 3,455.32
  4. Step 4: Simplify right side
    8,135.10x = 42,171,558.64
  5. Step 5: Solve for x
    x = 42,171,558.64/8,135.10
  6. Step 6: Final answer
    x = 5,183.90

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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.