Home / 3,311.89-4,570.40-1,819.80

Finding the Fourth Proportional to 3,311.89, 4,570.40 and 1,819.80

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Solution

The fourth proportional to 3,311.89, 4,570.40 and 1,819.80 is: 2,511.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.89 : 4,570.40 = 1,819.80 : x
  2. Step 2: Convert to fraction form
    3,311.89/4,570.40 = 1,819.80/x
  3. Step 3: Cross multiply
    3,311.89x = 4,570.40 × 1,819.80
  4. Step 4: Simplify right side
    3,311.89x = 8,317,181.97
  5. Step 5: Solve for x
    x = 8,317,181.97/3,311.89
  6. Step 6: Final answer
    x = 2,511.31

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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.