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Finding the Fourth Proportional to 2,751.92, 4,125.36 and 1,108.16

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Solution

The fourth proportional to 2,751.92, 4,125.36 and 1,108.16 is: 1,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.92 : 4,125.36 = 1,108.16 : x
  2. Step 2: Convert to fraction form
    2,751.92/4,125.36 = 1,108.16/x
  3. Step 3: Cross multiply
    2,751.92x = 4,125.36 × 1,108.16
  4. Step 4: Simplify right side
    2,751.92x = 4,571,558.94
  5. Step 5: Solve for x
    x = 4,571,558.94/2,751.92
  6. Step 6: Final answer
    x = 1,661.23

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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.