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Finding the Fourth Proportional to 2,753.22, 4,129.77 and 673.23

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Solution

The fourth proportional to 2,753.22, 4,129.77 and 673.23 is: 1,009.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.22 : 4,129.77 = 673.23 : x
  2. Step 2: Convert to fraction form
    2,753.22/4,129.77 = 673.23/x
  3. Step 3: Cross multiply
    2,753.22x = 4,129.77 × 673.23
  4. Step 4: Simplify right side
    2,753.22x = 2,780,285.06
  5. Step 5: Solve for x
    x = 2,780,285.06/2,753.22
  6. Step 6: Final answer
    x = 1,009.83

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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.