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Finding the Fourth Proportional to 3,135.76, 4,703.56 and 827.26

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Solution

The fourth proportional to 3,135.76, 4,703.56 and 827.26 is: 1,240.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.76 : 4,703.56 = 827.26 : x
  2. Step 2: Convert to fraction form
    3,135.76/4,703.56 = 827.26/x
  3. Step 3: Cross multiply
    3,135.76x = 4,703.56 × 827.26
  4. Step 4: Simplify right side
    3,135.76x = 3,891,067.05
  5. Step 5: Solve for x
    x = 3,891,067.05/3,135.76
  6. Step 6: Final answer
    x = 1,240.87

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1.5x scale

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.