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Finding the Fourth Proportional to 5,144.92, 7,099.94 and 2,787.05

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Solution

The fourth proportional to 5,144.92, 7,099.94 and 2,787.05 is: 3,846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,144.92 : 7,099.94 = 2,787.05 : x
  2. Step 2: Convert to fraction form
    5,144.92/7,099.94 = 2,787.05/x
  3. Step 3: Cross multiply
    5,144.92x = 7,099.94 × 2,787.05
  4. Step 4: Simplify right side
    5,144.92x = 19,787,912.49
  5. Step 5: Solve for x
    x = 19,787,912.49/5,144.92
  6. Step 6: Final answer
    x = 3,846.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.