Home / 2,781-4,219

Finding the Third Proportional to 2,781 and 4,219

Calculator

Solution

The third proportional to 2,781 and 4,219 is: 6,400.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781 : 4,219 = 4,219 : x
  2. Step 2: Convert to fraction form
    2,781/4,219 = 4,219/x
  3. Step 3: Cross multiply
    2,781x = 4,219 × 4,219
  4. Step 4: Simplify right side
    2,781x = 17,799,961
  5. Step 5: Solve for x
    x = 17,799,961/2,781
  6. Step 6: Final answer
    x = 6,400.56

Related Problems

Find third proportional to 1,390.50 and 2,109.50
Half scale
Find third proportional to 5,562 and 8,438
Double scale
Find third proportional to 2,783 and 4,222
Similar ratio
Find third proportional to 4,171.50 and 6,328.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.