Home / 7,382.87-11,071.45-2,879.37

Finding the Fourth Proportional to 7,382.87, 11,071.45 and 2,879.37

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Solution

The fourth proportional to 7,382.87, 11,071.45 and 2,879.37 is: 4,317.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,382.87 : 11,071.45 = 2,879.37 : x
  2. Step 2: Convert to fraction form
    7,382.87/11,071.45 = 2,879.37/x
  3. Step 3: Cross multiply
    7,382.87x = 11,071.45 × 2,879.37
  4. Step 4: Simplify right side
    7,382.87x = 31,878,745.63
  5. Step 5: Solve for x
    x = 31,878,745.63/7,382.87
  6. Step 6: Final answer
    x = 4,317.94

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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.