Home / 7,986.31-11,977.93-3,054.78

Finding the Fourth Proportional to 7,986.31, 11,977.93 and 3,054.78

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Solution

The fourth proportional to 7,986.31, 11,977.93 and 3,054.78 is: 4,581.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.31 : 11,977.93 = 3,054.78 : x
  2. Step 2: Convert to fraction form
    7,986.31/11,977.93 = 3,054.78/x
  3. Step 3: Cross multiply
    7,986.31x = 11,977.93 × 3,054.78
  4. Step 4: Simplify right side
    7,986.31x = 36,589,927.64
  5. Step 5: Solve for x
    x = 36,589,927.64/7,986.31
  6. Step 6: Final answer
    x = 4,581.58

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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.