Home / 2,190.70-3,015.50-1,910.44

Finding the Fourth Proportional to 2,190.70, 3,015.50 and 1,910.44

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Solution

The fourth proportional to 2,190.70, 3,015.50 and 1,910.44 is: 2,629.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.70 : 3,015.50 = 1,910.44 : x
  2. Step 2: Convert to fraction form
    2,190.70/3,015.50 = 1,910.44/x
  3. Step 3: Cross multiply
    2,190.70x = 3,015.50 × 1,910.44
  4. Step 4: Simplify right side
    2,190.70x = 5,760,926.04
  5. Step 5: Solve for x
    x = 5,760,926.04/2,190.70
  6. Step 6: Final answer
    x = 2,629.72

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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.