Home / 2,205.34-3,311.31-1,909.75

Finding the Fourth Proportional to 2,205.34, 3,311.31 and 1,909.75

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Solution

The fourth proportional to 2,205.34, 3,311.31 and 1,909.75 is: 2,867.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.34 : 3,311.31 = 1,909.75 : x
  2. Step 2: Convert to fraction form
    2,205.34/3,311.31 = 1,909.75/x
  3. Step 3: Cross multiply
    2,205.34x = 3,311.31 × 1,909.75
  4. Step 4: Simplify right side
    2,205.34x = 6,323,774.27
  5. Step 5: Solve for x
    x = 6,323,774.27/2,205.34
  6. Step 6: Final answer
    x = 2,867.48

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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.