Home / 8,764.78-13,147.80-2,760.34

Finding the Fourth Proportional to 8,764.78, 13,147.80 and 2,760.34

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Solution

The fourth proportional to 8,764.78, 13,147.80 and 2,760.34 is: 4,140.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,764.78 : 13,147.80 = 2,760.34 : x
  2. Step 2: Convert to fraction form
    8,764.78/13,147.80 = 2,760.34/x
  3. Step 3: Cross multiply
    8,764.78x = 13,147.80 × 2,760.34
  4. Step 4: Simplify right side
    8,764.78x = 36,292,398.25
  5. Step 5: Solve for x
    x = 36,292,398.25/8,764.78
  6. Step 6: Final answer
    x = 4,140.71

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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.