Home / 5,236.38-7,856.39-2,115.35

Finding the Fourth Proportional to 5,236.38, 7,856.39 and 2,115.35

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Solution

The fourth proportional to 5,236.38, 7,856.39 and 2,115.35 is: 3,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,236.38 : 7,856.39 = 2,115.35 : x
  2. Step 2: Convert to fraction form
    5,236.38/7,856.39 = 2,115.35/x
  3. Step 3: Cross multiply
    5,236.38x = 7,856.39 × 2,115.35
  4. Step 4: Simplify right side
    5,236.38x = 16,619,010.05
  5. Step 5: Solve for x
    x = 16,619,010.05/5,236.38
  6. Step 6: Final answer
    x = 3,173.76

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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.