Home / 5,408.89-7,453.19-3,990.33

Finding the Fourth Proportional to 5,408.89, 7,453.19 and 3,990.33

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Solution

The fourth proportional to 5,408.89, 7,453.19 and 3,990.33 is: 5,498.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.89 : 7,453.19 = 3,990.33 : x
  2. Step 2: Convert to fraction form
    5,408.89/7,453.19 = 3,990.33/x
  3. Step 3: Cross multiply
    5,408.89x = 7,453.19 × 3,990.33
  4. Step 4: Simplify right side
    5,408.89x = 29,740,687.65
  5. Step 5: Solve for x
    x = 29,740,687.65/5,408.89
  6. Step 6: Final answer
    x = 5,498.48

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1.5x scale

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.