Home / 2,800-3,894

Finding the Third Proportional to 2,800 and 3,894

Calculator

Solution

The third proportional to 2,800 and 3,894 is: 5,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800 : 3,894 = 3,894 : x
  2. Step 2: Convert to fraction form
    2,800/3,894 = 3,894/x
  3. Step 3: Cross multiply
    2,800x = 3,894 × 3,894
  4. Step 4: Simplify right side
    2,800x = 15,163,236
  5. Step 5: Solve for x
    x = 15,163,236/2,800
  6. Step 6: Final answer
    x = 5,415.44

Related Problems

Find third proportional to 1,400 and 1,947
Half scale
Find third proportional to 5,600 and 7,788
Double scale
Find third proportional to 2,802 and 3,897
Similar ratio
Find third proportional to 4,200 and 5,841
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.