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Finding the Fourth Proportional to 2,505.94, 3,758.97 and 862.57

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Solution

The fourth proportional to 2,505.94, 3,758.97 and 862.57 is: 1,293.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.94 : 3,758.97 = 862.57 : x
  2. Step 2: Convert to fraction form
    2,505.94/3,758.97 = 862.57/x
  3. Step 3: Cross multiply
    2,505.94x = 3,758.97 × 862.57
  4. Step 4: Simplify right side
    2,505.94x = 3,242,374.75
  5. Step 5: Solve for x
    x = 3,242,374.75/2,505.94
  6. Step 6: Final answer
    x = 1,293.88

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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.