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Finding the Fourth Proportional to 4,787.82, 7,179.20 and 2,156.13

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Solution

The fourth proportional to 4,787.82, 7,179.20 and 2,156.13 is: 3,233.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.82 : 7,179.20 = 2,156.13 : x
  2. Step 2: Convert to fraction form
    4,787.82/7,179.20 = 2,156.13/x
  3. Step 3: Cross multiply
    4,787.82x = 7,179.20 × 2,156.13
  4. Step 4: Simplify right side
    4,787.82x = 15,479,285.80
  5. Step 5: Solve for x
    x = 15,479,285.80/4,787.82
  6. Step 6: Final answer
    x = 3,233.06

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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.