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Finding the Fourth Proportional to 5,872.73, 8,809.09 and 1,979.87

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Solution

The fourth proportional to 5,872.73, 8,809.09 and 1,979.87 is: 2,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,872.73 : 8,809.09 = 1,979.87 : x
  2. Step 2: Convert to fraction form
    5,872.73/8,809.09 = 1,979.87/x
  3. Step 3: Cross multiply
    5,872.73x = 8,809.09 × 1,979.87
  4. Step 4: Simplify right side
    5,872.73x = 17,440,804.02
  5. Step 5: Solve for x
    x = 17,440,804.02/5,872.73
  6. Step 6: Final answer
    x = 2,969.80

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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.