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Finding the Fourth Proportional to 5,979.93, 8,970.72 and 2,647.91

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Solution

The fourth proportional to 5,979.93, 8,970.72 and 2,647.91 is: 3,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979.93 : 8,970.72 = 2,647.91 : x
  2. Step 2: Convert to fraction form
    5,979.93/8,970.72 = 2,647.91/x
  3. Step 3: Cross multiply
    5,979.93x = 8,970.72 × 2,647.91
  4. Step 4: Simplify right side
    5,979.93x = 23,753,671.69
  5. Step 5: Solve for x
    x = 23,753,671.69/5,979.93
  6. Step 6: Final answer
    x = 3,972.23

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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.