Home / 7,790.82-11,683.34-3,109.43

Finding the Fourth Proportional to 7,790.82, 11,683.34 and 3,109.43

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Solution

The fourth proportional to 7,790.82, 11,683.34 and 3,109.43 is: 4,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.82 : 11,683.34 = 3,109.43 : x
  2. Step 2: Convert to fraction form
    7,790.82/11,683.34 = 3,109.43/x
  3. Step 3: Cross multiply
    7,790.82x = 11,683.34 × 3,109.43
  4. Step 4: Simplify right side
    7,790.82x = 36,328,527.90
  5. Step 5: Solve for x
    x = 36,328,527.90/7,790.82
  6. Step 6: Final answer
    x = 4,662.99

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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.