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Finding the Fourth Proportional to 2,498.85, 3,748.29 and 855.41

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Solution

The fourth proportional to 2,498.85, 3,748.29 and 855.41 is: 1,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,498.85 : 3,748.29 = 855.41 : x
  2. Step 2: Convert to fraction form
    2,498.85/3,748.29 = 855.41/x
  3. Step 3: Cross multiply
    2,498.85x = 3,748.29 × 855.41
  4. Step 4: Simplify right side
    2,498.85x = 3,206,301.73
  5. Step 5: Solve for x
    x = 3,206,301.73/2,498.85
  6. Step 6: Final answer
    x = 1,283.11

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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.