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Finding the Fourth Proportional to 3,099.94, 4,649.00 and 908.15

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Solution

The fourth proportional to 3,099.94, 4,649.00 and 908.15 is: 1,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.94 : 4,649.00 = 908.15 : x
  2. Step 2: Convert to fraction form
    3,099.94/4,649.00 = 908.15/x
  3. Step 3: Cross multiply
    3,099.94x = 4,649.00 × 908.15
  4. Step 4: Simplify right side
    3,099.94x = 4,221,961.56
  5. Step 5: Solve for x
    x = 4,221,961.56/3,099.94
  6. Step 6: Final answer
    x = 1,361.95

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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.