Home / 8,765.78-13,149.30-2,761.34

Finding the Fourth Proportional to 8,765.78, 13,149.30 and 2,761.34

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Solution

The fourth proportional to 8,765.78, 13,149.30 and 2,761.34 is: 4,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.78 : 13,149.30 = 2,761.34 : x
  2. Step 2: Convert to fraction form
    8,765.78/13,149.30 = 2,761.34/x
  3. Step 3: Cross multiply
    8,765.78x = 13,149.30 × 2,761.34
  4. Step 4: Simplify right side
    8,765.78x = 36,309,688.06
  5. Step 5: Solve for x
    x = 36,309,688.06/8,765.78
  6. Step 6: Final answer
    x = 4,142.21

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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.