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Finding the Fourth Proportional to 6,339.81, 9,520.65 and 3,889.02

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Solution

The fourth proportional to 6,339.81, 9,520.65 and 3,889.02 is: 5,840.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.81 : 9,520.65 = 3,889.02 : x
  2. Step 2: Convert to fraction form
    6,339.81/9,520.65 = 3,889.02/x
  3. Step 3: Cross multiply
    6,339.81x = 9,520.65 × 3,889.02
  4. Step 4: Simplify right side
    6,339.81x = 37,025,998.26
  5. Step 5: Solve for x
    x = 37,025,998.26/6,339.81
  6. Step 6: Final answer
    x = 5,840.24

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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.