Home / 3,865-8,456

Finding the Third Proportional to 3,865 and 8,456

Calculator

Solution

The third proportional to 3,865 and 8,456 is: 18,500.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865 : 8,456 = 8,456 : x
  2. Step 2: Convert to fraction form
    3,865/8,456 = 8,456/x
  3. Step 3: Cross multiply
    3,865x = 8,456 × 8,456
  4. Step 4: Simplify right side
    3,865x = 71,503,936
  5. Step 5: Solve for x
    x = 71,503,936/3,865
  6. Step 6: Final answer
    x = 18,500.37

Related Problems

Find third proportional to 1,932.50 and 4,228
Half scale
Find third proportional to 7,730 and 16,912
Double scale
Find third proportional to 3,867 and 8,460
Similar ratio
Find third proportional to 5,797.50 and 12,684
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.