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Finding the Fourth Proportional to 3,129.75, 4,699.24 and 1,745.79

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Solution

The fourth proportional to 3,129.75, 4,699.24 and 1,745.79 is: 2,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.75 : 4,699.24 = 1,745.79 : x
  2. Step 2: Convert to fraction form
    3,129.75/4,699.24 = 1,745.79/x
  3. Step 3: Cross multiply
    3,129.75x = 4,699.24 × 1,745.79
  4. Step 4: Simplify right side
    3,129.75x = 8,203,886.20
  5. Step 5: Solve for x
    x = 8,203,886.20/3,129.75
  6. Step 6: Final answer
    x = 2,621.26

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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.