Home / 1,218.11-1,826.01-395.81

Finding the Fourth Proportional to 1,218.11, 1,826.01 and 395.81

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Solution

The fourth proportional to 1,218.11, 1,826.01 and 395.81 is: 593.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.11 : 1,826.01 = 395.81 : x
  2. Step 2: Convert to fraction form
    1,218.11/1,826.01 = 395.81/x
  3. Step 3: Cross multiply
    1,218.11x = 1,826.01 × 395.81
  4. Step 4: Simplify right side
    1,218.11x = 722,741.91
  5. Step 5: Solve for x
    x = 722,741.91/1,218.11
  6. Step 6: Final answer
    x = 593.33

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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.