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Finding the Fourth Proportional to 4,789.16, 7,183.62 and 1,279.16

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Solution

The fourth proportional to 4,789.16, 7,183.62 and 1,279.16 is: 1,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.16 : 7,183.62 = 1,279.16 : x
  2. Step 2: Convert to fraction form
    4,789.16/7,183.62 = 1,279.16/x
  3. Step 3: Cross multiply
    4,789.16x = 7,183.62 × 1,279.16
  4. Step 4: Simplify right side
    4,789.16x = 9,188,999.36
  5. Step 5: Solve for x
    x = 9,188,999.36/4,789.16
  6. Step 6: Final answer
    x = 1,918.71

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1.5x scale

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.