Home / 3,287.06-4,930.73-821.89

Finding the Fourth Proportional to 3,287.06, 4,930.73 and 821.89

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Solution

The fourth proportional to 3,287.06, 4,930.73 and 821.89 is: 1,232.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,287.06 : 4,930.73 = 821.89 : x
  2. Step 2: Convert to fraction form
    3,287.06/4,930.73 = 821.89/x
  3. Step 3: Cross multiply
    3,287.06x = 4,930.73 × 821.89
  4. Step 4: Simplify right side
    3,287.06x = 4,052,488.92
  5. Step 5: Solve for x
    x = 4,052,488.92/3,287.06
  6. Step 6: Final answer
    x = 1,232.86

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1.5x scale

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.