Home / 2,760.20-4,142.33-1,721.72

Finding the Fourth Proportional to 2,760.20, 4,142.33 and 1,721.72

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Solution

The fourth proportional to 2,760.20, 4,142.33 and 1,721.72 is: 2,583.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.20 : 4,142.33 = 1,721.72 : x
  2. Step 2: Convert to fraction form
    2,760.20/4,142.33 = 1,721.72/x
  3. Step 3: Cross multiply
    2,760.20x = 4,142.33 × 1,721.72
  4. Step 4: Simplify right side
    2,760.20x = 7,131,932.41
  5. Step 5: Solve for x
    x = 7,131,932.41/2,760.20
  6. Step 6: Final answer
    x = 2,583.85

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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.