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Finding the Fourth Proportional to 12,787.92, 19,182.92 and 3,553.92

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Solution

The fourth proportional to 12,787.92, 19,182.92 and 3,553.92 is: 5,331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.92 : 19,182.92 = 3,553.92 : x
  2. Step 2: Convert to fraction form
    12,787.92/19,182.92 = 3,553.92/x
  3. Step 3: Cross multiply
    12,787.92x = 19,182.92 × 3,553.92
  4. Step 4: Simplify right side
    12,787.92x = 68,174,563.05
  5. Step 5: Solve for x
    x = 68,174,563.05/12,787.92
  6. Step 6: Final answer
    x = 5,331.17

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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.