Home / 2,942.78-4,415.25-1,211.54

Finding the Fourth Proportional to 2,942.78, 4,415.25 and 1,211.54

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Solution

The fourth proportional to 2,942.78, 4,415.25 and 1,211.54 is: 1,817.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.78 : 4,415.25 = 1,211.54 : x
  2. Step 2: Convert to fraction form
    2,942.78/4,415.25 = 1,211.54/x
  3. Step 3: Cross multiply
    2,942.78x = 4,415.25 × 1,211.54
  4. Step 4: Simplify right side
    2,942.78x = 5,349,251.99
  5. Step 5: Solve for x
    x = 5,349,251.99/2,942.78
  6. Step 6: Final answer
    x = 1,817.75

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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.