Home / 3,890.75-5,832.07-2,913.89

Finding the Fourth Proportional to 3,890.75, 5,832.07 and 2,913.89

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Solution

The fourth proportional to 3,890.75, 5,832.07 and 2,913.89 is: 4,367.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.75 : 5,832.07 = 2,913.89 : x
  2. Step 2: Convert to fraction form
    3,890.75/5,832.07 = 2,913.89/x
  3. Step 3: Cross multiply
    3,890.75x = 5,832.07 × 2,913.89
  4. Step 4: Simplify right side
    3,890.75x = 16,993,974.01
  5. Step 5: Solve for x
    x = 16,993,974.01/3,890.75
  6. Step 6: Final answer
    x = 4,367.79

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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.