Home / 7,911.14-11,864.31-2,644.79

Finding the Fourth Proportional to 7,911.14, 11,864.31 and 2,644.79

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Solution

The fourth proportional to 7,911.14, 11,864.31 and 2,644.79 is: 3,966.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.14 : 11,864.31 = 2,644.79 : x
  2. Step 2: Convert to fraction form
    7,911.14/11,864.31 = 2,644.79/x
  3. Step 3: Cross multiply
    7,911.14x = 11,864.31 × 2,644.79
  4. Step 4: Simplify right side
    7,911.14x = 31,378,650.47
  5. Step 5: Solve for x
    x = 31,378,650.47/7,911.14
  6. Step 6: Final answer
    x = 3,966.39

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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.