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Finding the Fourth Proportional to 3,889.96, 5,835.22 and 1,424.72

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Solution

The fourth proportional to 3,889.96, 5,835.22 and 1,424.72 is: 2,137.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.96 : 5,835.22 = 1,424.72 : x
  2. Step 2: Convert to fraction form
    3,889.96/5,835.22 = 1,424.72/x
  3. Step 3: Cross multiply
    3,889.96x = 5,835.22 × 1,424.72
  4. Step 4: Simplify right side
    3,889.96x = 8,313,565.66
  5. Step 5: Solve for x
    x = 8,313,565.66/3,889.96
  6. Step 6: Final answer
    x = 2,137.19

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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.