Home / 8,135.92-12,205.51-3,455.89

Finding the Fourth Proportional to 8,135.92, 12,205.51 and 3,455.89

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Solution

The fourth proportional to 8,135.92, 12,205.51 and 3,455.89 is: 5,184.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.92 : 12,205.51 = 3,455.89 : x
  2. Step 2: Convert to fraction form
    8,135.92/12,205.51 = 3,455.89/x
  3. Step 3: Cross multiply
    8,135.92x = 12,205.51 × 3,455.89
  4. Step 4: Simplify right side
    8,135.92x = 42,180,904.85
  5. Step 5: Solve for x
    x = 42,180,904.85/8,135.92
  6. Step 6: Final answer
    x = 5,184.53

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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.