Home / 8,974.78-13,464.42-3,131.44

Finding the Fourth Proportional to 8,974.78, 13,464.42 and 3,131.44

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Solution

The fourth proportional to 8,974.78, 13,464.42 and 3,131.44 is: 4,697.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974.78 : 13,464.42 = 3,131.44 : x
  2. Step 2: Convert to fraction form
    8,974.78/13,464.42 = 3,131.44/x
  3. Step 3: Cross multiply
    8,974.78x = 13,464.42 × 3,131.44
  4. Step 4: Simplify right side
    8,974.78x = 42,163,023.36
  5. Step 5: Solve for x
    x = 42,163,023.36/8,974.78
  6. Step 6: Final answer
    x = 4,697.95

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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.