Home / 2,229.28-3,077.91-1,391.26

Finding the Fourth Proportional to 2,229.28, 3,077.91 and 1,391.26

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Solution

The fourth proportional to 2,229.28, 3,077.91 and 1,391.26 is: 1,920.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.28 : 3,077.91 = 1,391.26 : x
  2. Step 2: Convert to fraction form
    2,229.28/3,077.91 = 1,391.26/x
  3. Step 3: Cross multiply
    2,229.28x = 3,077.91 × 1,391.26
  4. Step 4: Simplify right side
    2,229.28x = 4,282,173.07
  5. Step 5: Solve for x
    x = 4,282,173.07/2,229.28
  6. Step 6: Final answer
    x = 1,920.88

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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.