Home / 8,135.55-12,205.50-3,455.84

Finding the Fourth Proportional to 8,135.55, 12,205.50 and 3,455.84

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Solution

The fourth proportional to 8,135.55, 12,205.50 and 3,455.84 is: 5,184.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.55 : 12,205.50 = 3,455.84 : x
  2. Step 2: Convert to fraction form
    8,135.55/12,205.50 = 3,455.84/x
  3. Step 3: Cross multiply
    8,135.55x = 12,205.50 × 3,455.84
  4. Step 4: Simplify right side
    8,135.55x = 42,180,194.09
  5. Step 5: Solve for x
    x = 42,180,194.09/8,135.55
  6. Step 6: Final answer
    x = 5,184.68

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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.