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Finding the Fourth Proportional to 1,723.82, 2,583.57 and 858.38

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Solution

The fourth proportional to 1,723.82, 2,583.57 and 858.38 is: 1,286.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.82 : 2,583.57 = 858.38 : x
  2. Step 2: Convert to fraction form
    1,723.82/2,583.57 = 858.38/x
  3. Step 3: Cross multiply
    1,723.82x = 2,583.57 × 858.38
  4. Step 4: Simplify right side
    1,723.82x = 2,217,684.82
  5. Step 5: Solve for x
    x = 2,217,684.82/1,723.82
  6. Step 6: Final answer
    x = 1,286.49

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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.