Home / 7,163.78-10,749.59-2,781.41

Finding the Fourth Proportional to 7,163.78, 10,749.59 and 2,781.41

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Solution

The fourth proportional to 7,163.78, 10,749.59 and 2,781.41 is: 4,173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.78 : 10,749.59 = 2,781.41 : x
  2. Step 2: Convert to fraction form
    7,163.78/10,749.59 = 2,781.41/x
  3. Step 3: Cross multiply
    7,163.78x = 10,749.59 × 2,781.41
  4. Step 4: Simplify right side
    7,163.78x = 29,898,949.47
  5. Step 5: Solve for x
    x = 29,898,949.47/7,163.78
  6. Step 6: Final answer
    x = 4,173.63

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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.