Home / 5,421.09-7,480.44-3,183.60

Finding the Fourth Proportional to 5,421.09, 7,480.44 and 3,183.60

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Solution

The fourth proportional to 5,421.09, 7,480.44 and 3,183.60 is: 4,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.09 : 7,480.44 = 3,183.60 : x
  2. Step 2: Convert to fraction form
    5,421.09/7,480.44 = 3,183.60/x
  3. Step 3: Cross multiply
    5,421.09x = 7,480.44 × 3,183.60
  4. Step 4: Simplify right side
    5,421.09x = 23,814,728.78
  5. Step 5: Solve for x
    x = 23,814,728.78/5,421.09
  6. Step 6: Final answer
    x = 4,392.98

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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.