Home / 3,120.56-4,306.26-1,723.28

Finding the Fourth Proportional to 3,120.56, 4,306.26 and 1,723.28

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Solution

The fourth proportional to 3,120.56, 4,306.26 and 1,723.28 is: 2,378.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.56 : 4,306.26 = 1,723.28 : x
  2. Step 2: Convert to fraction form
    3,120.56/4,306.26 = 1,723.28/x
  3. Step 3: Cross multiply
    3,120.56x = 4,306.26 × 1,723.28
  4. Step 4: Simplify right side
    3,120.56x = 7,420,891.73
  5. Step 5: Solve for x
    x = 7,420,891.73/3,120.56
  6. Step 6: Final answer
    x = 2,378.06

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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.