Home / 7,922.64-11,879.91-2,655.75

Finding the Fourth Proportional to 7,922.64, 11,879.91 and 2,655.75

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Solution

The fourth proportional to 7,922.64, 11,879.91 and 2,655.75 is: 3,982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.64 : 11,879.91 = 2,655.75 : x
  2. Step 2: Convert to fraction form
    7,922.64/11,879.91 = 2,655.75/x
  3. Step 3: Cross multiply
    7,922.64x = 11,879.91 × 2,655.75
  4. Step 4: Simplify right side
    7,922.64x = 31,550,070.98
  5. Step 5: Solve for x
    x = 31,550,070.98/7,922.64
  6. Step 6: Final answer
    x = 3,982.27

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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.