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Finding the Fourth Proportional to 3,508.78, 4,834.82 and 2,387.78

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Solution

The fourth proportional to 3,508.78, 4,834.82 and 2,387.78 is: 3,290.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,508.78 : 4,834.82 = 2,387.78 : x
  2. Step 2: Convert to fraction form
    3,508.78/4,834.82 = 2,387.78/x
  3. Step 3: Cross multiply
    3,508.78x = 4,834.82 × 2,387.78
  4. Step 4: Simplify right side
    3,508.78x = 11,544,486.50
  5. Step 5: Solve for x
    x = 11,544,486.50/3,508.78
  6. Step 6: Final answer
    x = 3,290.17

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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.