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Finding the Fourth Proportional to 1,969.39, 2,955.38 and 736.81

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Solution

The fourth proportional to 1,969.39, 2,955.38 and 736.81 is: 1,105.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.39 : 2,955.38 = 736.81 : x
  2. Step 2: Convert to fraction form
    1,969.39/2,955.38 = 736.81/x
  3. Step 3: Cross multiply
    1,969.39x = 2,955.38 × 736.81
  4. Step 4: Simplify right side
    1,969.39x = 2,177,553.54
  5. Step 5: Solve for x
    x = 2,177,553.54/1,969.39
  6. Step 6: Final answer
    x = 1,105.70

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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.