Home / 6,922.10-10,383.74-1,991.80

Finding the Fourth Proportional to 6,922.10, 10,383.74 and 1,991.80

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Solution

The fourth proportional to 6,922.10, 10,383.74 and 1,991.80 is: 2,987.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,922.10 : 10,383.74 = 1,991.80 : x
  2. Step 2: Convert to fraction form
    6,922.10/10,383.74 = 1,991.80/x
  3. Step 3: Cross multiply
    6,922.10x = 10,383.74 × 1,991.80
  4. Step 4: Simplify right side
    6,922.10x = 20,682,333.33
  5. Step 5: Solve for x
    x = 20,682,333.33/6,922.10
  6. Step 6: Final answer
    x = 2,987.87

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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.