Home / 3,880-8,474

Finding the Third Proportional to 3,880 and 8,474

Calculator

Solution

The third proportional to 3,880 and 8,474 is: 18,507.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880 : 8,474 = 8,474 : x
  2. Step 2: Convert to fraction form
    3,880/8,474 = 8,474/x
  3. Step 3: Cross multiply
    3,880x = 8,474 × 8,474
  4. Step 4: Simplify right side
    3,880x = 71,808,676
  5. Step 5: Solve for x
    x = 71,808,676/3,880
  6. Step 6: Final answer
    x = 18,507.39

Related Problems

Find third proportional to 1,940 and 4,237
Half scale
Find third proportional to 7,760 and 16,948
Double scale
Find third proportional to 3,882 and 8,478
Similar ratio
Find third proportional to 5,820 and 12,711
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.