Home / 3,511.20-4,845.20-1,939.30

Finding the Fourth Proportional to 3,511.20, 4,845.20 and 1,939.30

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Solution

The fourth proportional to 3,511.20, 4,845.20 and 1,939.30 is: 2,676.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.20 : 4,845.20 = 1,939.30 : x
  2. Step 2: Convert to fraction form
    3,511.20/4,845.20 = 1,939.30/x
  3. Step 3: Cross multiply
    3,511.20x = 4,845.20 × 1,939.30
  4. Step 4: Simplify right side
    3,511.20x = 9,396,296.36
  5. Step 5: Solve for x
    x = 9,396,296.36/3,511.20
  6. Step 6: Final answer
    x = 2,676.09

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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.