Home / 1,129.26-1,694.30-581.70

Finding the Fourth Proportional to 1,129.26, 1,694.30 and 581.70

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Solution

The fourth proportional to 1,129.26, 1,694.30 and 581.70 is: 872.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129.26 : 1,694.30 = 581.70 : x
  2. Step 2: Convert to fraction form
    1,129.26/1,694.30 = 581.70/x
  3. Step 3: Cross multiply
    1,129.26x = 1,694.30 × 581.70
  4. Step 4: Simplify right side
    1,129.26x = 985,562.93
  5. Step 5: Solve for x
    x = 985,562.93/1,129.26
  6. Step 6: Final answer
    x = 872.75

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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.