Home / 3,856-8,920

Finding the Third Proportional to 3,856 and 8,920

Calculator

Solution

The third proportional to 3,856 and 8,920 is: 20,634.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856 : 8,920 = 8,920 : x
  2. Step 2: Convert to fraction form
    3,856/8,920 = 8,920/x
  3. Step 3: Cross multiply
    3,856x = 8,920 × 8,920
  4. Step 4: Simplify right side
    3,856x = 79,566,400
  5. Step 5: Solve for x
    x = 79,566,400/3,856
  6. Step 6: Final answer
    x = 20,634.44

Related Problems

Find third proportional to 1,928 and 4,460
Half scale
Find third proportional to 7,712 and 17,840
Double scale
Find third proportional to 3,858 and 8,925
Similar ratio
Find third proportional to 5,784 and 13,380
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.