Home / 3,081.80-4,622.66-890.54

Finding the Fourth Proportional to 3,081.80, 4,622.66 and 890.54

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Solution

The fourth proportional to 3,081.80, 4,622.66 and 890.54 is: 1,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.80 : 4,622.66 = 890.54 : x
  2. Step 2: Convert to fraction form
    3,081.80/4,622.66 = 890.54/x
  3. Step 3: Cross multiply
    3,081.80x = 4,622.66 × 890.54
  4. Step 4: Simplify right side
    3,081.80x = 4,116,663.64
  5. Step 5: Solve for x
    x = 4,116,663.64/3,081.80
  6. Step 6: Final answer
    x = 1,335.80

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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.