Home / 7,764.38-11,647.79-2,571.47

Finding the Fourth Proportional to 7,764.38, 11,647.79 and 2,571.47

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Solution

The fourth proportional to 7,764.38, 11,647.79 and 2,571.47 is: 3,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.38 : 11,647.79 = 2,571.47 : x
  2. Step 2: Convert to fraction form
    7,764.38/11,647.79 = 2,571.47/x
  3. Step 3: Cross multiply
    7,764.38x = 11,647.79 × 2,571.47
  4. Step 4: Simplify right side
    7,764.38x = 29,951,871.46
  5. Step 5: Solve for x
    x = 29,951,871.46/7,764.38
  6. Step 6: Final answer
    x = 3,857.60

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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.