Home / 1,319-2,870

Finding the Third Proportional to 1,319 and 2,870

Calculator

Solution

The third proportional to 1,319 and 2,870 is: 6,244.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319 : 2,870 = 2,870 : x
  2. Step 2: Convert to fraction form
    1,319/2,870 = 2,870/x
  3. Step 3: Cross multiply
    1,319x = 2,870 × 2,870
  4. Step 4: Simplify right side
    1,319x = 8,236,900
  5. Step 5: Solve for x
    x = 8,236,900/1,319
  6. Step 6: Final answer
    x = 6,244.81

Related Problems

Find third proportional to 659.50 and 1,435
Half scale
Find third proportional to 2,638 and 5,740
Double scale
Find third proportional to 1,321 and 2,874
Similar ratio
Find third proportional to 1,978.50 and 4,305
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.