Home / 2,491.85-3,438.84-1,372.83

Finding the Fourth Proportional to 2,491.85, 3,438.84 and 1,372.83

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Solution

The fourth proportional to 2,491.85, 3,438.84 and 1,372.83 is: 1,894.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.85 : 3,438.84 = 1,372.83 : x
  2. Step 2: Convert to fraction form
    2,491.85/3,438.84 = 1,372.83/x
  3. Step 3: Cross multiply
    2,491.85x = 3,438.84 × 1,372.83
  4. Step 4: Simplify right side
    2,491.85x = 4,720,942.72
  5. Step 5: Solve for x
    x = 4,720,942.72/2,491.85
  6. Step 6: Final answer
    x = 1,894.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.