Home / 7,945.66-11,918.91-2,102.11

Finding the Fourth Proportional to 7,945.66, 11,918.91 and 2,102.11

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Solution

The fourth proportional to 7,945.66, 11,918.91 and 2,102.11 is: 3,153.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.66 : 11,918.91 = 2,102.11 : x
  2. Step 2: Convert to fraction form
    7,945.66/11,918.91 = 2,102.11/x
  3. Step 3: Cross multiply
    7,945.66x = 11,918.91 × 2,102.11
  4. Step 4: Simplify right side
    7,945.66x = 25,054,859.90
  5. Step 5: Solve for x
    x = 25,054,859.90/7,945.66
  6. Step 6: Final answer
    x = 3,153.28

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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.