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Finding the Fourth Proportional to 4,979.96, 7,469.80 and 2,018.32

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Solution

The fourth proportional to 4,979.96, 7,469.80 and 2,018.32 is: 3,027.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.96 : 7,469.80 = 2,018.32 : x
  2. Step 2: Convert to fraction form
    4,979.96/7,469.80 = 2,018.32/x
  3. Step 3: Cross multiply
    4,979.96x = 7,469.80 × 2,018.32
  4. Step 4: Simplify right side
    4,979.96x = 15,076,446.74
  5. Step 5: Solve for x
    x = 15,076,446.74/4,979.96
  6. Step 6: Final answer
    x = 3,027.42

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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.