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Finding the Fourth Proportional to 2,506.85, 3,758.91 and 862.04

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Solution

The fourth proportional to 2,506.85, 3,758.91 and 862.04 is: 1,292.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,506.85 : 3,758.91 = 862.04 : x
  2. Step 2: Convert to fraction form
    2,506.85/3,758.91 = 862.04/x
  3. Step 3: Cross multiply
    2,506.85x = 3,758.91 × 862.04
  4. Step 4: Simplify right side
    2,506.85x = 3,240,336.94
  5. Step 5: Solve for x
    x = 3,240,336.94/2,506.85
  6. Step 6: Final answer
    x = 1,292.59

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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.