Home / 2,961.30-4,438.11-1,317.78

Finding the Fourth Proportional to 2,961.30, 4,438.11 and 1,317.78

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Solution

The fourth proportional to 2,961.30, 4,438.11 and 1,317.78 is: 1,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.30 : 4,438.11 = 1,317.78 : x
  2. Step 2: Convert to fraction form
    2,961.30/4,438.11 = 1,317.78/x
  3. Step 3: Cross multiply
    2,961.30x = 4,438.11 × 1,317.78
  4. Step 4: Simplify right side
    2,961.30x = 5,848,452.60
  5. Step 5: Solve for x
    x = 5,848,452.60/2,961.30
  6. Step 6: Final answer
    x = 1,974.96

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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.