Home / 1,441.11-2,161.56-516.49

Finding the Fourth Proportional to 1,441.11, 2,161.56 and 516.49

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Solution

The fourth proportional to 1,441.11, 2,161.56 and 516.49 is: 774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.11 : 2,161.56 = 516.49 : x
  2. Step 2: Convert to fraction form
    1,441.11/2,161.56 = 516.49/x
  3. Step 3: Cross multiply
    1,441.11x = 2,161.56 × 516.49
  4. Step 4: Simplify right side
    1,441.11x = 1,116,424.12
  5. Step 5: Solve for x
    x = 1,116,424.12/1,441.11
  6. Step 6: Final answer
    x = 774.70

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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.