Home / 2,155.35-3,234.26-838.94

Finding the Fourth Proportional to 2,155.35, 3,234.26 and 838.94

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Solution

The fourth proportional to 2,155.35, 3,234.26 and 838.94 is: 1,258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.35 : 3,234.26 = 838.94 : x
  2. Step 2: Convert to fraction form
    2,155.35/3,234.26 = 838.94/x
  3. Step 3: Cross multiply
    2,155.35x = 3,234.26 × 838.94
  4. Step 4: Simplify right side
    2,155.35x = 2,713,331.29
  5. Step 5: Solve for x
    x = 2,713,331.29/2,155.35
  6. Step 6: Final answer
    x = 1,258.88

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1.5x scale

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.