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Finding the Fourth Proportional to 3,498.78, 4,828.17 and 2,005.66

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Solution

The fourth proportional to 3,498.78, 4,828.17 and 2,005.66 is: 2,767.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,498.78 : 4,828.17 = 2,005.66 : x
  2. Step 2: Convert to fraction form
    3,498.78/4,828.17 = 2,005.66/x
  3. Step 3: Cross multiply
    3,498.78x = 4,828.17 × 2,005.66
  4. Step 4: Simplify right side
    3,498.78x = 9,683,667.44
  5. Step 5: Solve for x
    x = 9,683,667.44/3,498.78
  6. Step 6: Final answer
    x = 2,767.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.