Home / 5,478.44-8,228.59-3,400.79

Finding the Fourth Proportional to 5,478.44, 8,228.59 and 3,400.79

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Solution

The fourth proportional to 5,478.44, 8,228.59 and 3,400.79 is: 5,107.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.44 : 8,228.59 = 3,400.79 : x
  2. Step 2: Convert to fraction form
    5,478.44/8,228.59 = 3,400.79/x
  3. Step 3: Cross multiply
    5,478.44x = 8,228.59 × 3,400.79
  4. Step 4: Simplify right side
    5,478.44x = 27,983,656.94
  5. Step 5: Solve for x
    x = 27,983,656.94/5,478.44
  6. Step 6: Final answer
    x = 5,107.97

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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.