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Finding the Fourth Proportional to 1,751.92, 2,400.32 and 1,728.88

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Solution

The fourth proportional to 1,751.92, 2,400.32 and 1,728.88 is: 2,368.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.92 : 2,400.32 = 1,728.88 : x
  2. Step 2: Convert to fraction form
    1,751.92/2,400.32 = 1,728.88/x
  3. Step 3: Cross multiply
    1,751.92x = 2,400.32 × 1,728.88
  4. Step 4: Simplify right side
    1,751.92x = 4,149,865.24
  5. Step 5: Solve for x
    x = 4,149,865.24/1,751.92
  6. Step 6: Final answer
    x = 2,368.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.