Home / 9,185.09-13,777.32-3,990.96

Finding the Fourth Proportional to 9,185.09, 13,777.32 and 3,990.96

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Solution

The fourth proportional to 9,185.09, 13,777.32 and 3,990.96 is: 5,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,185.09 : 13,777.32 = 3,990.96 : x
  2. Step 2: Convert to fraction form
    9,185.09/13,777.32 = 3,990.96/x
  3. Step 3: Cross multiply
    9,185.09x = 13,777.32 × 3,990.96
  4. Step 4: Simplify right side
    9,185.09x = 54,984,747.99
  5. Step 5: Solve for x
    x = 54,984,747.99/9,185.09
  6. Step 6: Final answer
    x = 5,986.31

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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.