Home / 7,839-16,878

Finding the Third Proportional to 7,839 and 16,878

Calculator

Solution

The third proportional to 7,839 and 16,878 is: 36,339.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839 : 16,878 = 16,878 : x
  2. Step 2: Convert to fraction form
    7,839/16,878 = 16,878/x
  3. Step 3: Cross multiply
    7,839x = 16,878 × 16,878
  4. Step 4: Simplify right side
    7,839x = 284,866,884
  5. Step 5: Solve for x
    x = 284,866,884/7,839
  6. Step 6: Final answer
    x = 36,339.70

Related Problems

Find third proportional to 3,919.50 and 8,439
Half scale
Find third proportional to 15,678 and 33,756
Double scale
Find third proportional to 7,841 and 16,882
Similar ratio
Find third proportional to 11,758.50 and 25,317
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.