Home / 3,208.20-4,815.90-1,910.40

Finding the Fourth Proportional to 3,208.20, 4,815.90 and 1,910.40

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Solution

The fourth proportional to 3,208.20, 4,815.90 and 1,910.40 is: 2,867.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.20 : 4,815.90 = 1,910.40 : x
  2. Step 2: Convert to fraction form
    3,208.20/4,815.90 = 1,910.40/x
  3. Step 3: Cross multiply
    3,208.20x = 4,815.90 × 1,910.40
  4. Step 4: Simplify right side
    3,208.20x = 9,200,295.36
  5. Step 5: Solve for x
    x = 9,200,295.36/3,208.20
  6. Step 6: Final answer
    x = 2,867.74

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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.