Home / 8,781.21-13,171.41-2,937.87

Finding the Fourth Proportional to 8,781.21, 13,171.41 and 2,937.87

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Solution

The fourth proportional to 8,781.21, 13,171.41 and 2,937.87 is: 4,406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.21 : 13,171.41 = 2,937.87 : x
  2. Step 2: Convert to fraction form
    8,781.21/13,171.41 = 2,937.87/x
  3. Step 3: Cross multiply
    8,781.21x = 13,171.41 × 2,937.87
  4. Step 4: Simplify right side
    8,781.21x = 38,695,890.30
  5. Step 5: Solve for x
    x = 38,695,890.30/8,781.21
  6. Step 6: Final answer
    x = 4,406.67

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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.