Home / 3,220-4,878

Finding the Third Proportional to 3,220 and 4,878

Calculator

Solution

The third proportional to 3,220 and 4,878 is: 7,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220 : 4,878 = 4,878 : x
  2. Step 2: Convert to fraction form
    3,220/4,878 = 4,878/x
  3. Step 3: Cross multiply
    3,220x = 4,878 × 4,878
  4. Step 4: Simplify right side
    3,220x = 23,794,884
  5. Step 5: Solve for x
    x = 23,794,884/3,220
  6. Step 6: Final answer
    x = 7,389.72

Related Problems

Find third proportional to 1,610 and 2,439
Half scale
Find third proportional to 6,440 and 9,756
Double scale
Find third proportional to 3,222 and 4,881
Similar ratio
Find third proportional to 4,830 and 7,317
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.