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Finding the Fourth Proportional to 3,857.53, 5,786.63 and 1,084.23

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Solution

The fourth proportional to 3,857.53, 5,786.63 and 1,084.23 is: 1,626.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.53 : 5,786.63 = 1,084.23 : x
  2. Step 2: Convert to fraction form
    3,857.53/5,786.63 = 1,084.23/x
  3. Step 3: Cross multiply
    3,857.53x = 5,786.63 × 1,084.23
  4. Step 4: Simplify right side
    3,857.53x = 6,274,008.91
  5. Step 5: Solve for x
    x = 6,274,008.91/3,857.53
  6. Step 6: Final answer
    x = 1,626.43

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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.