Home / 2,942.28-4,415.04-1,212.12

Finding the Fourth Proportional to 2,942.28, 4,415.04 and 1,212.12

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Solution

The fourth proportional to 2,942.28, 4,415.04 and 1,212.12 is: 1,818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.28 : 4,415.04 = 1,212.12 : x
  2. Step 2: Convert to fraction form
    2,942.28/4,415.04 = 1,212.12/x
  3. Step 3: Cross multiply
    2,942.28x = 4,415.04 × 1,212.12
  4. Step 4: Simplify right side
    2,942.28x = 5,351,558.28
  5. Step 5: Solve for x
    x = 5,351,558.28/2,942.28
  6. Step 6: Final answer
    x = 1,818.85

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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.