Home / 5,214.78-7,198.66-3,118.50

Finding the Fourth Proportional to 5,214.78, 7,198.66 and 3,118.50

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Solution

The fourth proportional to 5,214.78, 7,198.66 and 3,118.50 is: 4,304.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.78 : 7,198.66 = 3,118.50 : x
  2. Step 2: Convert to fraction form
    5,214.78/7,198.66 = 3,118.50/x
  3. Step 3: Cross multiply
    5,214.78x = 7,198.66 × 3,118.50
  4. Step 4: Simplify right side
    5,214.78x = 22,449,021.21
  5. Step 5: Solve for x
    x = 22,449,021.21/5,214.78
  6. Step 6: Final answer
    x = 4,304.88

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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.