Home / 3,120.57-4,306.32-1,704.21

Finding the Fourth Proportional to 3,120.57, 4,306.32 and 1,704.21

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Solution

The fourth proportional to 3,120.57, 4,306.32 and 1,704.21 is: 2,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.57 : 4,306.32 = 1,704.21 : x
  2. Step 2: Convert to fraction form
    3,120.57/4,306.32 = 1,704.21/x
  3. Step 3: Cross multiply
    3,120.57x = 4,306.32 × 1,704.21
  4. Step 4: Simplify right side
    3,120.57x = 7,338,843.55
  5. Step 5: Solve for x
    x = 7,338,843.55/3,120.57
  6. Step 6: Final answer
    x = 2,351.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.