Home / 7,842.72-11,766.78-3,943.92

Finding the Fourth Proportional to 7,842.72, 11,766.78 and 3,943.92

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Solution

The fourth proportional to 7,842.72, 11,766.78 and 3,943.92 is: 5,917.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.72 : 11,766.78 = 3,943.92 : x
  2. Step 2: Convert to fraction form
    7,842.72/11,766.78 = 3,943.92/x
  3. Step 3: Cross multiply
    7,842.72x = 11,766.78 × 3,943.92
  4. Step 4: Simplify right side
    7,842.72x = 46,407,238.98
  5. Step 5: Solve for x
    x = 46,407,238.98/7,842.72
  6. Step 6: Final answer
    x = 5,917.24

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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.