Home / 1,107.27-1,528.14-635.25

Finding the Fourth Proportional to 1,107.27, 1,528.14 and 635.25

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Solution

The fourth proportional to 1,107.27, 1,528.14 and 635.25 is: 876.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.27 : 1,528.14 = 635.25 : x
  2. Step 2: Convert to fraction form
    1,107.27/1,528.14 = 635.25/x
  3. Step 3: Cross multiply
    1,107.27x = 1,528.14 × 635.25
  4. Step 4: Simplify right side
    1,107.27x = 970,750.94
  5. Step 5: Solve for x
    x = 970,750.94/1,107.27
  6. Step 6: Final answer
    x = 876.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.