Home / 3,891-5,661

Finding the Third Proportional to 3,891 and 5,661

Calculator

Solution

The third proportional to 3,891 and 5,661 is: 8,236.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891 : 5,661 = 5,661 : x
  2. Step 2: Convert to fraction form
    3,891/5,661 = 5,661/x
  3. Step 3: Cross multiply
    3,891x = 5,661 × 5,661
  4. Step 4: Simplify right side
    3,891x = 32,046,921
  5. Step 5: Solve for x
    x = 32,046,921/3,891
  6. Step 6: Final answer
    x = 8,236.17

Related Problems

Find third proportional to 1,945.50 and 2,830.50
Half scale
Find third proportional to 7,782 and 11,322
Double scale
Find third proportional to 3,893 and 5,664
Similar ratio
Find third proportional to 5,836.50 and 8,491.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.