Home / 3,989-9,272

Finding the Third Proportional to 3,989 and 9,272

Calculator

Solution

The third proportional to 3,989 and 9,272 is: 21,551.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989 : 9,272 = 9,272 : x
  2. Step 2: Convert to fraction form
    3,989/9,272 = 9,272/x
  3. Step 3: Cross multiply
    3,989x = 9,272 × 9,272
  4. Step 4: Simplify right side
    3,989x = 85,969,984
  5. Step 5: Solve for x
    x = 85,969,984/3,989
  6. Step 6: Final answer
    x = 21,551.76

Related Problems

Find third proportional to 1,994.50 and 4,636
Half scale
Find third proportional to 7,978 and 18,544
Double scale
Find third proportional to 3,991 and 9,277
Similar ratio
Find third proportional to 5,983.50 and 13,908
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.