Home / 1,481.22-2,043.80-818.06

Finding the Fourth Proportional to 1,481.22, 2,043.80 and 818.06

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Solution

The fourth proportional to 1,481.22, 2,043.80 and 818.06 is: 1,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.22 : 2,043.80 = 818.06 : x
  2. Step 2: Convert to fraction form
    1,481.22/2,043.80 = 818.06/x
  3. Step 3: Cross multiply
    1,481.22x = 2,043.80 × 818.06
  4. Step 4: Simplify right side
    1,481.22x = 1,671,936.72
  5. Step 5: Solve for x
    x = 1,671,936.72/1,481.22
  6. Step 6: Final answer
    x = 1,128.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.