Home / 3,161.80-4,737.90-2,672.20

Finding the Fourth Proportional to 3,161.80, 4,737.90 and 2,672.20

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Solution

The fourth proportional to 3,161.80, 4,737.90 and 2,672.20 is: 4,004.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.80 : 4,737.90 = 2,672.20 : x
  2. Step 2: Convert to fraction form
    3,161.80/4,737.90 = 2,672.20/x
  3. Step 3: Cross multiply
    3,161.80x = 4,737.90 × 2,672.20
  4. Step 4: Simplify right side
    3,161.80x = 12,660,616.38
  5. Step 5: Solve for x
    x = 12,660,616.38/3,161.80
  6. Step 6: Final answer
    x = 4,004.24

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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.