Home / 1,128.24-1,691.83-347.97

Finding the Fourth Proportional to 1,128.24, 1,691.83 and 347.97

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Solution

The fourth proportional to 1,128.24, 1,691.83 and 347.97 is: 521.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128.24 : 1,691.83 = 347.97 : x
  2. Step 2: Convert to fraction form
    1,128.24/1,691.83 = 347.97/x
  3. Step 3: Cross multiply
    1,128.24x = 1,691.83 × 347.97
  4. Step 4: Simplify right side
    1,128.24x = 588,706.09
  5. Step 5: Solve for x
    x = 588,706.09/1,128.24
  6. Step 6: Final answer
    x = 521.79

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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.