Home / 3,889.28-5,366.72-2,233.28

Finding the Fourth Proportional to 3,889.28, 5,366.72 and 2,233.28

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Solution

The fourth proportional to 3,889.28, 5,366.72 and 2,233.28 is: 3,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.28 : 5,366.72 = 2,233.28 : x
  2. Step 2: Convert to fraction form
    3,889.28/5,366.72 = 2,233.28/x
  3. Step 3: Cross multiply
    3,889.28x = 5,366.72 × 2,233.28
  4. Step 4: Simplify right side
    3,889.28x = 11,985,388.44
  5. Step 5: Solve for x
    x = 11,985,388.44/3,889.28
  6. Step 6: Final answer
    x = 3,081.65

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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.