Home / 2,763.28-4,144.67-1,721.21

Finding the Fourth Proportional to 2,763.28, 4,144.67 and 1,721.21

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Solution

The fourth proportional to 2,763.28, 4,144.67 and 1,721.21 is: 2,581.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.28 : 4,144.67 = 1,721.21 : x
  2. Step 2: Convert to fraction form
    2,763.28/4,144.67 = 1,721.21/x
  3. Step 3: Cross multiply
    2,763.28x = 4,144.67 × 1,721.21
  4. Step 4: Simplify right side
    2,763.28x = 7,133,847.45
  5. Step 5: Solve for x
    x = 7,133,847.45/2,763.28
  6. Step 6: Final answer
    x = 2,581.66

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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.