Home / 3,129.72-4,695.19-938.27

Finding the Fourth Proportional to 3,129.72, 4,695.19 and 938.27

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Solution

The fourth proportional to 3,129.72, 4,695.19 and 938.27 is: 1,407.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.72 : 4,695.19 = 938.27 : x
  2. Step 2: Convert to fraction form
    3,129.72/4,695.19 = 938.27/x
  3. Step 3: Cross multiply
    3,129.72x = 4,695.19 × 938.27
  4. Step 4: Simplify right side
    3,129.72x = 4,405,341.54
  5. Step 5: Solve for x
    x = 4,405,341.54/3,129.72
  6. Step 6: Final answer
    x = 1,407.58

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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.