Home / 3,945.83-5,917.21-1,313.24

Finding the Fourth Proportional to 3,945.83, 5,917.21 and 1,313.24

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Solution

The fourth proportional to 3,945.83, 5,917.21 and 1,313.24 is: 1,969.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.83 : 5,917.21 = 1,313.24 : x
  2. Step 2: Convert to fraction form
    3,945.83/5,917.21 = 1,313.24/x
  3. Step 3: Cross multiply
    3,945.83x = 5,917.21 × 1,313.24
  4. Step 4: Simplify right side
    3,945.83x = 7,770,716.86
  5. Step 5: Solve for x
    x = 7,770,716.86/3,945.83
  6. Step 6: Final answer
    x = 1,969.35

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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.