Home / 3,897-7,686

Finding the Third Proportional to 3,897 and 7,686

Calculator

Solution

The third proportional to 3,897 and 7,686 is: 15,158.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897 : 7,686 = 7,686 : x
  2. Step 2: Convert to fraction form
    3,897/7,686 = 7,686/x
  3. Step 3: Cross multiply
    3,897x = 7,686 × 7,686
  4. Step 4: Simplify right side
    3,897x = 59,074,596
  5. Step 5: Solve for x
    x = 59,074,596/3,897
  6. Step 6: Final answer
    x = 15,158.99

Related Problems

Find third proportional to 1,948.50 and 3,843
Half scale
Find third proportional to 7,794 and 15,372
Double scale
Find third proportional to 3,899 and 7,690
Similar ratio
Find third proportional to 5,845.50 and 11,529
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.