Home / 4,672.20-6,998.85-2,911.80

Finding the Fourth Proportional to 4,672.20, 6,998.85 and 2,911.80

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Solution

The fourth proportional to 4,672.20, 6,998.85 and 2,911.80 is: 4,361.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,672.20 : 6,998.85 = 2,911.80 : x
  2. Step 2: Convert to fraction form
    4,672.20/6,998.85 = 2,911.80/x
  3. Step 3: Cross multiply
    4,672.20x = 6,998.85 × 2,911.80
  4. Step 4: Simplify right side
    4,672.20x = 20,379,251.43
  5. Step 5: Solve for x
    x = 20,379,251.43/4,672.20
  6. Step 6: Final answer
    x = 4,361.81

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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.