Home / 5,421.41-8,119.12-2,781.97

Finding the Fourth Proportional to 5,421.41, 8,119.12 and 2,781.97

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Solution

The fourth proportional to 5,421.41, 8,119.12 and 2,781.97 is: 4,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.41 : 8,119.12 = 2,781.97 : x
  2. Step 2: Convert to fraction form
    5,421.41/8,119.12 = 2,781.97/x
  3. Step 3: Cross multiply
    5,421.41x = 8,119.12 × 2,781.97
  4. Step 4: Simplify right side
    5,421.41x = 22,587,148.27
  5. Step 5: Solve for x
    x = 22,587,148.27/5,421.41
  6. Step 6: Final answer
    x = 4,166.29

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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.