Home / 5,456-8,187.28-1,993.60

Finding the Fourth Proportional to 5,456, 8,187.28 and 1,993.60

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Solution

The fourth proportional to 5,456, 8,187.28 and 1,993.60 is: 2,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456 : 8,187.28 = 1,993.60 : x
  2. Step 2: Convert to fraction form
    5,456/8,187.28 = 1,993.60/x
  3. Step 3: Cross multiply
    5,456x = 8,187.28 × 1,993.60
  4. Step 4: Simplify right side
    5,456x = 16,322,161.41
  5. Step 5: Solve for x
    x = 16,322,161.41/5,456
  6. Step 6: Final answer
    x = 2,991.60

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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.