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Finding the Fourth Proportional to 5,572.43, 8,361.36 and 3,939.47

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Solution

The fourth proportional to 5,572.43, 8,361.36 and 3,939.47 is: 5,911.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,572.43 : 8,361.36 = 3,939.47 : x
  2. Step 2: Convert to fraction form
    5,572.43/8,361.36 = 3,939.47/x
  3. Step 3: Cross multiply
    5,572.43x = 8,361.36 × 3,939.47
  4. Step 4: Simplify right side
    5,572.43x = 32,939,326.88
  5. Step 5: Solve for x
    x = 32,939,326.88/5,572.43
  6. Step 6: Final answer
    x = 5,911.12

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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.