Home / 2,930-3,891

Finding the Third Proportional to 2,930 and 3,891

Calculator

Solution

The third proportional to 2,930 and 3,891 is: 5,167.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930 : 3,891 = 3,891 : x
  2. Step 2: Convert to fraction form
    2,930/3,891 = 3,891/x
  3. Step 3: Cross multiply
    2,930x = 3,891 × 3,891
  4. Step 4: Simplify right side
    2,930x = 15,139,881
  5. Step 5: Solve for x
    x = 15,139,881/2,930
  6. Step 6: Final answer
    x = 5,167.19

Related Problems

Find third proportional to 1,465 and 1,945.50
Half scale
Find third proportional to 5,860 and 7,782
Double scale
Find third proportional to 2,932 and 3,894
Similar ratio
Find third proportional to 4,395 and 5,836.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.