Home / 395.50-839

Finding the Third Proportional to 395.50 and 839

Calculator

Solution

The third proportional to 395.50 and 839 is: 1,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.50 : 839 = 839 : x
  2. Step 2: Convert to fraction form
    395.50/839 = 839/x
  3. Step 3: Cross multiply
    395.50x = 839 × 839
  4. Step 4: Simplify right side
    395.50x = 703,921
  5. Step 5: Solve for x
    x = 703,921/395.50
  6. Step 6: Final answer
    x = 1,779.83

Related Problems

Find third proportional to 197.75 and 419.50
Half scale
Find third proportional to 791 and 1,678
Double scale
Find third proportional to 398 and 843
Similar ratio
Find third proportional to 593.25 and 1,258.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.