Home / 7,980.68-11,971.26-3,360.44

Finding the Fourth Proportional to 7,980.68, 11,971.26 and 3,360.44

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Solution

The fourth proportional to 7,980.68, 11,971.26 and 3,360.44 is: 5,040.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.68 : 11,971.26 = 3,360.44 : x
  2. Step 2: Convert to fraction form
    7,980.68/11,971.26 = 3,360.44/x
  3. Step 3: Cross multiply
    7,980.68x = 11,971.26 × 3,360.44
  4. Step 4: Simplify right side
    7,980.68x = 40,228,700.95
  5. Step 5: Solve for x
    x = 40,228,700.95/7,980.68
  6. Step 6: Final answer
    x = 5,040.76

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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.