Home / 3,015.20-4,520.10-1,975.70

Finding the Fourth Proportional to 3,015.20, 4,520.10 and 1,975.70

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Solution

The fourth proportional to 3,015.20, 4,520.10 and 1,975.70 is: 2,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.20 : 4,520.10 = 1,975.70 : x
  2. Step 2: Convert to fraction form
    3,015.20/4,520.10 = 1,975.70/x
  3. Step 3: Cross multiply
    3,015.20x = 4,520.10 × 1,975.70
  4. Step 4: Simplify right side
    3,015.20x = 8,930,361.57
  5. Step 5: Solve for x
    x = 8,930,361.57/3,015.20
  6. Step 6: Final answer
    x = 2,961.78

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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.