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Finding the Fourth Proportional to 5,845.65, 8,772.31 and 2,147.91

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Solution

The fourth proportional to 5,845.65, 8,772.31 and 2,147.91 is: 3,223.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,845.65 : 8,772.31 = 2,147.91 : x
  2. Step 2: Convert to fraction form
    5,845.65/8,772.31 = 2,147.91/x
  3. Step 3: Cross multiply
    5,845.65x = 8,772.31 × 2,147.91
  4. Step 4: Simplify right side
    5,845.65x = 18,842,135.06
  5. Step 5: Solve for x
    x = 18,842,135.06/5,845.65
  6. Step 6: Final answer
    x = 3,223.27

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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.