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Finding the Fourth Proportional to 2,192.54, 3,285.54 and 2,138.20

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Solution

The fourth proportional to 2,192.54, 3,285.54 and 2,138.20 is: 3,204.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.54 : 3,285.54 = 2,138.20 : x
  2. Step 2: Convert to fraction form
    2,192.54/3,285.54 = 2,138.20/x
  3. Step 3: Cross multiply
    2,192.54x = 3,285.54 × 2,138.20
  4. Step 4: Simplify right side
    2,192.54x = 7,025,133.41
  5. Step 5: Solve for x
    x = 7,025,133.41/2,192.54
  6. Step 6: Final answer
    x = 3,204.11

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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.