Home / 3,620.70-5,431.05-1,889.10

Finding the Fourth Proportional to 3,620.70, 5,431.05 and 1,889.10

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Solution

The fourth proportional to 3,620.70, 5,431.05 and 1,889.10 is: 2,833.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.70 : 5,431.05 = 1,889.10 : x
  2. Step 2: Convert to fraction form
    3,620.70/5,431.05 = 1,889.10/x
  3. Step 3: Cross multiply
    3,620.70x = 5,431.05 × 1,889.10
  4. Step 4: Simplify right side
    3,620.70x = 10,259,796.56
  5. Step 5: Solve for x
    x = 10,259,796.56/3,620.70
  6. Step 6: Final answer
    x = 2,833.65

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Similar ratio
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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.