Home / 7,990.98-11,986.74-4,092.36

Finding the Fourth Proportional to 7,990.98, 11,986.74 and 4,092.36

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Solution

The fourth proportional to 7,990.98, 11,986.74 and 4,092.36 is: 6,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.98 : 11,986.74 = 4,092.36 : x
  2. Step 2: Convert to fraction form
    7,990.98/11,986.74 = 4,092.36/x
  3. Step 3: Cross multiply
    7,990.98x = 11,986.74 × 4,092.36
  4. Step 4: Simplify right side
    7,990.98x = 49,054,055.31
  5. Step 5: Solve for x
    x = 49,054,055.31/7,990.98
  6. Step 6: Final answer
    x = 6,138.68

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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.