Home / 6,621.60-9,928.80-2,236.80

Finding the Fourth Proportional to 6,621.60, 9,928.80 and 2,236.80

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Solution

The fourth proportional to 6,621.60, 9,928.80 and 2,236.80 is: 3,353.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.60 : 9,928.80 = 2,236.80 : x
  2. Step 2: Convert to fraction form
    6,621.60/9,928.80 = 2,236.80/x
  3. Step 3: Cross multiply
    6,621.60x = 9,928.80 × 2,236.80
  4. Step 4: Simplify right side
    6,621.60x = 22,208,739.84
  5. Step 5: Solve for x
    x = 22,208,739.84/6,621.60
  6. Step 6: Final answer
    x = 3,353.98

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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.