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Finding the Fourth Proportional to 3,519.66, 4,857.66 and 2,679

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Solution

The fourth proportional to 3,519.66, 4,857.66 and 2,679 is: 3,697.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.66 : 4,857.66 = 2,679 : x
  2. Step 2: Convert to fraction form
    3,519.66/4,857.66 = 2,679/x
  3. Step 3: Cross multiply
    3,519.66x = 4,857.66 × 2,679
  4. Step 4: Simplify right side
    3,519.66x = 13,013,671.14
  5. Step 5: Solve for x
    x = 13,013,671.14/3,519.66
  6. Step 6: Final answer
    x = 3,697.42

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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.