Home / 3,989.33-5,983.99-1,908.84

Finding the Fourth Proportional to 3,989.33, 5,983.99 and 1,908.84

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Solution

The fourth proportional to 3,989.33, 5,983.99 and 1,908.84 is: 2,863.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.33 : 5,983.99 = 1,908.84 : x
  2. Step 2: Convert to fraction form
    3,989.33/5,983.99 = 1,908.84/x
  3. Step 3: Cross multiply
    3,989.33x = 5,983.99 × 1,908.84
  4. Step 4: Simplify right side
    3,989.33x = 11,422,479.47
  5. Step 5: Solve for x
    x = 11,422,479.47/3,989.33
  6. Step 6: Final answer
    x = 2,863.26

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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.