Home / 3,015.12-4,520.20-2,772.12

Finding the Fourth Proportional to 3,015.12, 4,520.20 and 2,772.12

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Solution

The fourth proportional to 3,015.12, 4,520.20 and 2,772.12 is: 4,155.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.12 : 4,520.20 = 2,772.12 : x
  2. Step 2: Convert to fraction form
    3,015.12/4,520.20 = 2,772.12/x
  3. Step 3: Cross multiply
    3,015.12x = 4,520.20 × 2,772.12
  4. Step 4: Simplify right side
    3,015.12x = 12,530,536.82
  5. Step 5: Solve for x
    x = 12,530,536.82/3,015.12
  6. Step 6: Final answer
    x = 4,155.90

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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.