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Finding the Fourth Proportional to 3,921.07, 5,881.83 and 1,109.67

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Solution

The fourth proportional to 3,921.07, 5,881.83 and 1,109.67 is: 1,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.07 : 5,881.83 = 1,109.67 : x
  2. Step 2: Convert to fraction form
    3,921.07/5,881.83 = 1,109.67/x
  3. Step 3: Cross multiply
    3,921.07x = 5,881.83 × 1,109.67
  4. Step 4: Simplify right side
    3,921.07x = 6,526,856.73
  5. Step 5: Solve for x
    x = 6,526,856.73/3,921.07
  6. Step 6: Final answer
    x = 1,664.56

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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.