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Finding the Fourth Proportional to 3,425.24, 5,138.73 and 960.07

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Solution

The fourth proportional to 3,425.24, 5,138.73 and 960.07 is: 1,440.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.24 : 5,138.73 = 960.07 : x
  2. Step 2: Convert to fraction form
    3,425.24/5,138.73 = 960.07/x
  3. Step 3: Cross multiply
    3,425.24x = 5,138.73 × 960.07
  4. Step 4: Simplify right side
    3,425.24x = 4,933,540.51
  5. Step 5: Solve for x
    x = 4,933,540.51/3,425.24
  6. Step 6: Final answer
    x = 1,440.35

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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.