Home / 3,985-8,651

Finding the Third Proportional to 3,985 and 8,651

Calculator

Solution

The third proportional to 3,985 and 8,651 is: 18,780.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985 : 8,651 = 8,651 : x
  2. Step 2: Convert to fraction form
    3,985/8,651 = 8,651/x
  3. Step 3: Cross multiply
    3,985x = 8,651 × 8,651
  4. Step 4: Simplify right side
    3,985x = 74,839,801
  5. Step 5: Solve for x
    x = 74,839,801/3,985
  6. Step 6: Final answer
    x = 18,780.38

Related Problems

Find third proportional to 1,992.50 and 4,325.50
Half scale
Find third proportional to 7,970 and 17,302
Double scale
Find third proportional to 3,987 and 8,655
Similar ratio
Find third proportional to 5,977.50 and 12,976.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.