Home / 3,120.65-4,306.39-1,704.30

Finding the Fourth Proportional to 3,120.65, 4,306.39 and 1,704.30

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Solution

The fourth proportional to 3,120.65, 4,306.39 and 1,704.30 is: 2,351.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.65 : 4,306.39 = 1,704.30 : x
  2. Step 2: Convert to fraction form
    3,120.65/4,306.39 = 1,704.30/x
  3. Step 3: Cross multiply
    3,120.65x = 4,306.39 × 1,704.30
  4. Step 4: Simplify right side
    3,120.65x = 7,339,380.48
  5. Step 5: Solve for x
    x = 7,339,380.48/3,120.65
  6. Step 6: Final answer
    x = 2,351.88

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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.