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Finding the Fourth Proportional to 7,832.60, 11,745.06 and 3,879.28

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Solution

The fourth proportional to 7,832.60, 11,745.06 and 3,879.28 is: 5,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,832.60 : 11,745.06 = 3,879.28 : x
  2. Step 2: Convert to fraction form
    7,832.60/11,745.06 = 3,879.28/x
  3. Step 3: Cross multiply
    7,832.60x = 11,745.06 × 3,879.28
  4. Step 4: Simplify right side
    7,832.60x = 45,562,376.36
  5. Step 5: Solve for x
    x = 45,562,376.36/7,832.60
  6. Step 6: Final answer
    x = 5,817.02

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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.