Home / 3,828.12-5,284.26-3,722.79

Finding the Fourth Proportional to 3,828.12, 5,284.26 and 3,722.79

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Solution

The fourth proportional to 3,828.12, 5,284.26 and 3,722.79 is: 5,138.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.12 : 5,284.26 = 3,722.79 : x
  2. Step 2: Convert to fraction form
    3,828.12/5,284.26 = 3,722.79/x
  3. Step 3: Cross multiply
    3,828.12x = 5,284.26 × 3,722.79
  4. Step 4: Simplify right side
    3,828.12x = 19,672,190.29
  5. Step 5: Solve for x
    x = 19,672,190.29/3,828.12
  6. Step 6: Final answer
    x = 5,138.86

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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.