Home / 3,313.67-4,969.49-1,121.81

Finding the Fourth Proportional to 3,313.67, 4,969.49 and 1,121.81

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Solution

The fourth proportional to 3,313.67, 4,969.49 and 1,121.81 is: 1,682.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.67 : 4,969.49 = 1,121.81 : x
  2. Step 2: Convert to fraction form
    3,313.67/4,969.49 = 1,121.81/x
  3. Step 3: Cross multiply
    3,313.67x = 4,969.49 × 1,121.81
  4. Step 4: Simplify right side
    3,313.67x = 5,574,793.12
  5. Step 5: Solve for x
    x = 5,574,793.12/3,313.67
  6. Step 6: Final answer
    x = 1,682.36

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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.