Home / 2,212.10-3,318.20-730.85

Finding the Fourth Proportional to 2,212.10, 3,318.20 and 730.85

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Solution

The fourth proportional to 2,212.10, 3,318.20 and 730.85 is: 1,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.10 : 3,318.20 = 730.85 : x
  2. Step 2: Convert to fraction form
    2,212.10/3,318.20 = 730.85/x
  3. Step 3: Cross multiply
    2,212.10x = 3,318.20 × 730.85
  4. Step 4: Simplify right side
    2,212.10x = 2,425,086.22
  5. Step 5: Solve for x
    x = 2,425,086.22/2,212.10
  6. Step 6: Final answer
    x = 1,096.28

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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.