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Finding the Fourth Proportional to 7,879.16, 11,807.60 and 4,183.13

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Solution

The fourth proportional to 7,879.16, 11,807.60 and 4,183.13 is: 6,268.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.16 : 11,807.60 = 4,183.13 : x
  2. Step 2: Convert to fraction form
    7,879.16/11,807.60 = 4,183.13/x
  3. Step 3: Cross multiply
    7,879.16x = 11,807.60 × 4,183.13
  4. Step 4: Simplify right side
    7,879.16x = 49,392,645.83
  5. Step 5: Solve for x
    x = 49,392,645.83/7,879.16
  6. Step 6: Final answer
    x = 6,268.77

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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.