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Finding the Fourth Proportional to 3,424.63, 5,136.93 and 827.57

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Solution

The fourth proportional to 3,424.63, 5,136.93 and 827.57 is: 1,241.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,424.63 : 5,136.93 = 827.57 : x
  2. Step 2: Convert to fraction form
    3,424.63/5,136.93 = 827.57/x
  3. Step 3: Cross multiply
    3,424.63x = 5,136.93 × 827.57
  4. Step 4: Simplify right side
    3,424.63x = 4,251,143.48
  5. Step 5: Solve for x
    x = 4,251,143.48/3,424.63
  6. Step 6: Final answer
    x = 1,241.34

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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.