Home / 7,980.83-11,971.24-2,137.59

Finding the Fourth Proportional to 7,980.83, 11,971.24 and 2,137.59

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Solution

The fourth proportional to 7,980.83, 11,971.24 and 2,137.59 is: 3,206.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.83 : 11,971.24 = 2,137.59 : x
  2. Step 2: Convert to fraction form
    7,980.83/11,971.24 = 2,137.59/x
  3. Step 3: Cross multiply
    7,980.83x = 11,971.24 × 2,137.59
  4. Step 4: Simplify right side
    7,980.83x = 25,589,532.37
  5. Step 5: Solve for x
    x = 25,589,532.37/7,980.83
  6. Step 6: Final answer
    x = 3,206.38

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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.