Home / 1,790.40-2,687.34-1,691.79

Finding the Fourth Proportional to 1,790.40, 2,687.34 and 1,691.79

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Solution

The fourth proportional to 1,790.40, 2,687.34 and 1,691.79 is: 2,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.40 : 2,687.34 = 1,691.79 : x
  2. Step 2: Convert to fraction form
    1,790.40/2,687.34 = 1,691.79/x
  3. Step 3: Cross multiply
    1,790.40x = 2,687.34 × 1,691.79
  4. Step 4: Simplify right side
    1,790.40x = 4,546,414.94
  5. Step 5: Solve for x
    x = 4,546,414.94/1,790.40
  6. Step 6: Final answer
    x = 2,539.33

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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.