Home / 8,115.84-12,179.23-3,184.90

Finding the Fourth Proportional to 8,115.84, 12,179.23 and 3,184.90

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Solution

The fourth proportional to 8,115.84, 12,179.23 and 3,184.90 is: 4,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.84 : 12,179.23 = 3,184.90 : x
  2. Step 2: Convert to fraction form
    8,115.84/12,179.23 = 3,184.90/x
  3. Step 3: Cross multiply
    8,115.84x = 12,179.23 × 3,184.90
  4. Step 4: Simplify right side
    8,115.84x = 38,789,591.22
  5. Step 5: Solve for x
    x = 38,789,591.22/8,115.84
  6. Step 6: Final answer
    x = 4,779.49

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1.5x scale

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.