Home / 3,411.45-5,111.10-2,791.80

Finding the Fourth Proportional to 3,411.45, 5,111.10 and 2,791.80

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Solution

The fourth proportional to 3,411.45, 5,111.10 and 2,791.80 is: 4,182.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.45 : 5,111.10 = 2,791.80 : x
  2. Step 2: Convert to fraction form
    3,411.45/5,111.10 = 2,791.80/x
  3. Step 3: Cross multiply
    3,411.45x = 5,111.10 × 2,791.80
  4. Step 4: Simplify right side
    3,411.45x = 14,269,168.98
  5. Step 5: Solve for x
    x = 14,269,168.98/3,411.45
  6. Step 6: Final answer
    x = 4,182.73

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1.5x scale

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.