Home / 4,860-9,720

Finding the Third Proportional to 4,860 and 9,720

Calculator

Solution

The third proportional to 4,860 and 9,720 is: 19,440

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,860 : 9,720 = 9,720 : x
  2. Step 2: Convert to fraction form
    4,860/9,720 = 9,720/x
  3. Step 3: Cross multiply
    4,860x = 9,720 × 9,720
  4. Step 4: Simplify right side
    4,860x = 94,478,400
  5. Step 5: Solve for x
    x = 94,478,400/4,860
  6. Step 6: Final answer
    x = 19,440

Related Problems

Find third proportional to 2,430 and 4,860
Half scale
Find third proportional to 9,720 and 19,440
Double scale
Find third proportional to 4,862 and 9,724
Similar ratio
Find third proportional to 7,290 and 14,580
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.