Home / 1,874.28-2,811.31-575.75

Finding the Fourth Proportional to 1,874.28, 2,811.31 and 575.75

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Solution

The fourth proportional to 1,874.28, 2,811.31 and 575.75 is: 863.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.28 : 2,811.31 = 575.75 : x
  2. Step 2: Convert to fraction form
    1,874.28/2,811.31 = 575.75/x
  3. Step 3: Cross multiply
    1,874.28x = 2,811.31 × 575.75
  4. Step 4: Simplify right side
    1,874.28x = 1,618,611.73
  5. Step 5: Solve for x
    x = 1,618,611.73/1,874.28
  6. Step 6: Final answer
    x = 863.59

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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.