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Finding the Fourth Proportional to 3,652, 5,039.76 and 2,255.56

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Solution

The fourth proportional to 3,652, 5,039.76 and 2,255.56 is: 3,112.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,652 : 5,039.76 = 2,255.56 : x
  2. Step 2: Convert to fraction form
    3,652/5,039.76 = 2,255.56/x
  3. Step 3: Cross multiply
    3,652x = 5,039.76 × 2,255.56
  4. Step 4: Simplify right side
    3,652x = 11,367,481.07
  5. Step 5: Solve for x
    x = 11,367,481.07/3,652
  6. Step 6: Final answer
    x = 3,112.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.