Home / 7,325.82-10,990.55-2,131.70

Finding the Fourth Proportional to 7,325.82, 10,990.55 and 2,131.70

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Solution

The fourth proportional to 7,325.82, 10,990.55 and 2,131.70 is: 3,198.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,325.82 : 10,990.55 = 2,131.70 : x
  2. Step 2: Convert to fraction form
    7,325.82/10,990.55 = 2,131.70/x
  3. Step 3: Cross multiply
    7,325.82x = 10,990.55 × 2,131.70
  4. Step 4: Simplify right side
    7,325.82x = 23,428,505.81
  5. Step 5: Solve for x
    x = 23,428,505.81/7,325.82
  6. Step 6: Final answer
    x = 3,198.07

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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.