Home / 3,461.76-5,191.43-2,766.78

Finding the Fourth Proportional to 3,461.76, 5,191.43 and 2,766.78

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Solution

The fourth proportional to 3,461.76, 5,191.43 and 2,766.78 is: 4,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,461.76 : 5,191.43 = 2,766.78 : x
  2. Step 2: Convert to fraction form
    3,461.76/5,191.43 = 2,766.78/x
  3. Step 3: Cross multiply
    3,461.76x = 5,191.43 × 2,766.78
  4. Step 4: Simplify right side
    3,461.76x = 14,363,530.86
  5. Step 5: Solve for x
    x = 14,363,530.86/3,461.76
  6. Step 6: Final answer
    x = 4,149.20

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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.