Home / 5,481.80-8,222.30-1,783.88

Finding the Fourth Proportional to 5,481.80, 8,222.30 and 1,783.88

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Solution

The fourth proportional to 5,481.80, 8,222.30 and 1,783.88 is: 2,675.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.80 : 8,222.30 = 1,783.88 : x
  2. Step 2: Convert to fraction form
    5,481.80/8,222.30 = 1,783.88/x
  3. Step 3: Cross multiply
    5,481.80x = 8,222.30 × 1,783.88
  4. Step 4: Simplify right side
    5,481.80x = 14,667,596.52
  5. Step 5: Solve for x
    x = 14,667,596.52/5,481.80
  6. Step 6: Final answer
    x = 2,675.69

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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.