Home / 3,821.80-5,737.88-1,974.12

Finding the Fourth Proportional to 3,821.80, 5,737.88 and 1,974.12

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Solution

The fourth proportional to 3,821.80, 5,737.88 and 1,974.12 is: 2,963.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.80 : 5,737.88 = 1,974.12 : x
  2. Step 2: Convert to fraction form
    3,821.80/5,737.88 = 1,974.12/x
  3. Step 3: Cross multiply
    3,821.80x = 5,737.88 × 1,974.12
  4. Step 4: Simplify right side
    3,821.80x = 11,327,263.67
  5. Step 5: Solve for x
    x = 11,327,263.67/3,821.80
  6. Step 6: Final answer
    x = 2,963.86

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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.