Home / 7,898.45-11,845.31-4,198.70

Finding the Fourth Proportional to 7,898.45, 11,845.31 and 4,198.70

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Solution

The fourth proportional to 7,898.45, 11,845.31 and 4,198.70 is: 6,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.45 : 11,845.31 = 4,198.70 : x
  2. Step 2: Convert to fraction form
    7,898.45/11,845.31 = 4,198.70/x
  3. Step 3: Cross multiply
    7,898.45x = 11,845.31 × 4,198.70
  4. Step 4: Simplify right side
    7,898.45x = 49,734,911.72
  5. Step 5: Solve for x
    x = 49,734,911.72/7,898.45
  6. Step 6: Final answer
    x = 6,296.80

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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.