Home / 1,789.68-2,679.90-1,059.78

Finding the Fourth Proportional to 1,789.68, 2,679.90 and 1,059.78

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Solution

The fourth proportional to 1,789.68, 2,679.90 and 1,059.78 is: 1,586.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.68 : 2,679.90 = 1,059.78 : x
  2. Step 2: Convert to fraction form
    1,789.68/2,679.90 = 1,059.78/x
  3. Step 3: Cross multiply
    1,789.68x = 2,679.90 × 1,059.78
  4. Step 4: Simplify right side
    1,789.68x = 2,840,104.42
  5. Step 5: Solve for x
    x = 2,840,104.42/1,789.68
  6. Step 6: Final answer
    x = 1,586.93

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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.