Home / 2,191.88-3,288.43-1,265.75

Finding the Fourth Proportional to 2,191.88, 3,288.43 and 1,265.75

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Solution

The fourth proportional to 2,191.88, 3,288.43 and 1,265.75 is: 1,898.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.88 : 3,288.43 = 1,265.75 : x
  2. Step 2: Convert to fraction form
    2,191.88/3,288.43 = 1,265.75/x
  3. Step 3: Cross multiply
    2,191.88x = 3,288.43 × 1,265.75
  4. Step 4: Simplify right side
    2,191.88x = 4,162,315.41
  5. Step 5: Solve for x
    x = 4,162,315.41/2,191.88
  6. Step 6: Final answer
    x = 1,898.97

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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.