Home / 2,788-6,870

Finding the Third Proportional to 2,788 and 6,870

Calculator

Solution

The third proportional to 2,788 and 6,870 is: 16,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788 : 6,870 = 6,870 : x
  2. Step 2: Convert to fraction form
    2,788/6,870 = 6,870/x
  3. Step 3: Cross multiply
    2,788x = 6,870 × 6,870
  4. Step 4: Simplify right side
    2,788x = 47,196,900
  5. Step 5: Solve for x
    x = 47,196,900/2,788
  6. Step 6: Final answer
    x = 16,928.59

Related Problems

Find third proportional to 1,394 and 3,435
Half scale
Find third proportional to 5,576 and 13,740
Double scale
Find third proportional to 2,790 and 6,875
Similar ratio
Find third proportional to 4,182 and 10,305
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.