Home / 3,819.54-5,270.91-2,141.36

Finding the Fourth Proportional to 3,819.54, 5,270.91 and 2,141.36

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Solution

The fourth proportional to 3,819.54, 5,270.91 and 2,141.36 is: 2,955.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.54 : 5,270.91 = 2,141.36 : x
  2. Step 2: Convert to fraction form
    3,819.54/5,270.91 = 2,141.36/x
  3. Step 3: Cross multiply
    3,819.54x = 5,270.91 × 2,141.36
  4. Step 4: Simplify right side
    3,819.54x = 11,286,902.66
  5. Step 5: Solve for x
    x = 11,286,902.66/3,819.54
  6. Step 6: Final answer
    x = 2,955.05

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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.