Home / 6,858-9,909

Finding the Third Proportional to 6,858 and 9,909

Calculator

Solution

The third proportional to 6,858 and 9,909 is: 14,317.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,858 : 9,909 = 9,909 : x
  2. Step 2: Convert to fraction form
    6,858/9,909 = 9,909/x
  3. Step 3: Cross multiply
    6,858x = 9,909 × 9,909
  4. Step 4: Simplify right side
    6,858x = 98,188,281
  5. Step 5: Solve for x
    x = 98,188,281/6,858
  6. Step 6: Final answer
    x = 14,317.33

Related Problems

Find third proportional to 3,429 and 4,954.50
Half scale
Find third proportional to 13,716 and 19,818
Double scale
Find third proportional to 6,860 and 9,912
Similar ratio
Find third proportional to 10,287 and 14,863.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.