Home / 3,620.84-5,431.26-1,889.06

Finding the Fourth Proportional to 3,620.84, 5,431.26 and 1,889.06

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Solution

The fourth proportional to 3,620.84, 5,431.26 and 1,889.06 is: 2,833.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.84 : 5,431.26 = 1,889.06 : x
  2. Step 2: Convert to fraction form
    3,620.84/5,431.26 = 1,889.06/x
  3. Step 3: Cross multiply
    3,620.84x = 5,431.26 × 1,889.06
  4. Step 4: Simplify right side
    3,620.84x = 10,259,976.02
  5. Step 5: Solve for x
    x = 10,259,976.02/3,620.84
  6. Step 6: Final answer
    x = 2,833.59

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Double scale
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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.