Home / 7,943.72-11,914.67-2,100.79

Finding the Fourth Proportional to 7,943.72, 11,914.67 and 2,100.79

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Solution

The fourth proportional to 7,943.72, 11,914.67 and 2,100.79 is: 3,150.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.72 : 11,914.67 = 2,100.79 : x
  2. Step 2: Convert to fraction form
    7,943.72/11,914.67 = 2,100.79/x
  3. Step 3: Cross multiply
    7,943.72x = 11,914.67 × 2,100.79
  4. Step 4: Simplify right side
    7,943.72x = 25,030,219.59
  5. Step 5: Solve for x
    x = 25,030,219.59/7,943.72
  6. Step 6: Final answer
    x = 3,150.94

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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.