Home / 8,115.50-12,168.38-2,847.62

Finding the Fourth Proportional to 8,115.50, 12,168.38 and 2,847.62

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Solution

The fourth proportional to 8,115.50, 12,168.38 and 2,847.62 is: 4,269.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.50 : 12,168.38 = 2,847.62 : x
  2. Step 2: Convert to fraction form
    8,115.50/12,168.38 = 2,847.62/x
  3. Step 3: Cross multiply
    8,115.50x = 12,168.38 × 2,847.62
  4. Step 4: Simplify right side
    8,115.50x = 34,650,922.26
  5. Step 5: Solve for x
    x = 34,650,922.26/8,115.50
  6. Step 6: Final answer
    x = 4,269.72

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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.