Home / 3,918-8,187

Finding the Third Proportional to 3,918 and 8,187

Calculator

Solution

The third proportional to 3,918 and 8,187 is: 17,107.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918 : 8,187 = 8,187 : x
  2. Step 2: Convert to fraction form
    3,918/8,187 = 8,187/x
  3. Step 3: Cross multiply
    3,918x = 8,187 × 8,187
  4. Step 4: Simplify right side
    3,918x = 67,026,969
  5. Step 5: Solve for x
    x = 67,026,969/3,918
  6. Step 6: Final answer
    x = 17,107.44

Related Problems

Find third proportional to 1,959 and 4,093.50
Half scale
Find third proportional to 7,836 and 16,374
Double scale
Find third proportional to 3,920 and 8,191
Similar ratio
Find third proportional to 5,877 and 12,280.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.