Home / 8,717.76-13,076.40-3,171.21

Finding the Fourth Proportional to 8,717.76, 13,076.40 and 3,171.21

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Solution

The fourth proportional to 8,717.76, 13,076.40 and 3,171.21 is: 4,756.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.76 : 13,076.40 = 3,171.21 : x
  2. Step 2: Convert to fraction form
    8,717.76/13,076.40 = 3,171.21/x
  3. Step 3: Cross multiply
    8,717.76x = 13,076.40 × 3,171.21
  4. Step 4: Simplify right side
    8,717.76x = 41,468,022.34
  5. Step 5: Solve for x
    x = 41,468,022.34/8,717.76
  6. Step 6: Final answer
    x = 4,756.73

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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.