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Finding the Fourth Proportional to 2,905.54, 4,008.22 and 1,725.78

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Solution

The fourth proportional to 2,905.54, 4,008.22 and 1,725.78 is: 2,380.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.54 : 4,008.22 = 1,725.78 : x
  2. Step 2: Convert to fraction form
    2,905.54/4,008.22 = 1,725.78/x
  3. Step 3: Cross multiply
    2,905.54x = 4,008.22 × 1,725.78
  4. Step 4: Simplify right side
    2,905.54x = 6,917,305.91
  5. Step 5: Solve for x
    x = 6,917,305.91/2,905.54
  6. Step 6: Final answer
    x = 2,380.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.