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Finding the Fourth Proportional to 7,898.54, 11,843.83 and 2,631.68

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Solution

The fourth proportional to 7,898.54, 11,843.83 and 2,631.68 is: 3,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.54 : 11,843.83 = 2,631.68 : x
  2. Step 2: Convert to fraction form
    7,898.54/11,843.83 = 2,631.68/x
  3. Step 3: Cross multiply
    7,898.54x = 11,843.83 × 2,631.68
  4. Step 4: Simplify right side
    7,898.54x = 31,169,193.56
  5. Step 5: Solve for x
    x = 31,169,193.56/7,898.54
  6. Step 6: Final answer
    x = 3,946.20

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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.