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Finding the Fourth Proportional to 6,787.78, 10,181.79 and 2,170.78

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Solution

The fourth proportional to 6,787.78, 10,181.79 and 2,170.78 is: 3,256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,787.78 : 10,181.79 = 2,170.78 : x
  2. Step 2: Convert to fraction form
    6,787.78/10,181.79 = 2,170.78/x
  3. Step 3: Cross multiply
    6,787.78x = 10,181.79 × 2,170.78
  4. Step 4: Simplify right side
    6,787.78x = 22,102,426.10
  5. Step 5: Solve for x
    x = 22,102,426.10/6,787.78
  6. Step 6: Final answer
    x = 3,256.21

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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.