Home / 5,205.60-7,183.12-3,109.36

Finding the Fourth Proportional to 5,205.60, 7,183.12 and 3,109.36

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Solution

The fourth proportional to 5,205.60, 7,183.12 and 3,109.36 is: 4,290.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.60 : 7,183.12 = 3,109.36 : x
  2. Step 2: Convert to fraction form
    5,205.60/7,183.12 = 3,109.36/x
  3. Step 3: Cross multiply
    5,205.60x = 7,183.12 × 3,109.36
  4. Step 4: Simplify right side
    5,205.60x = 22,334,906.00
  5. Step 5: Solve for x
    x = 22,334,906.00/5,205.60
  6. Step 6: Final answer
    x = 4,290.55

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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.