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Finding the Fourth Proportional to 2,554.42, 3,831.87 and 994.54

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Solution

The fourth proportional to 2,554.42, 3,831.87 and 994.54 is: 1,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,554.42 : 3,831.87 = 994.54 : x
  2. Step 2: Convert to fraction form
    2,554.42/3,831.87 = 994.54/x
  3. Step 3: Cross multiply
    2,554.42x = 3,831.87 × 994.54
  4. Step 4: Simplify right side
    2,554.42x = 3,810,947.99
  5. Step 5: Solve for x
    x = 3,810,947.99/2,554.42
  6. Step 6: Final answer
    x = 1,491.90

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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.