Home / 3,549.78-5,324.66-1,989.04

Finding the Fourth Proportional to 3,549.78, 5,324.66 and 1,989.04

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Solution

The fourth proportional to 3,549.78, 5,324.66 and 1,989.04 is: 2,983.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,549.78 : 5,324.66 = 1,989.04 : x
  2. Step 2: Convert to fraction form
    3,549.78/5,324.66 = 1,989.04/x
  3. Step 3: Cross multiply
    3,549.78x = 5,324.66 × 1,989.04
  4. Step 4: Simplify right side
    3,549.78x = 10,590,961.73
  5. Step 5: Solve for x
    x = 10,590,961.73/3,549.78
  6. Step 6: Final answer
    x = 2,983.55

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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.