Home / 3,988-4,540

Finding the Third Proportional to 3,988 and 4,540

Calculator

Solution

The third proportional to 3,988 and 4,540 is: 5,168.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988 : 4,540 = 4,540 : x
  2. Step 2: Convert to fraction form
    3,988/4,540 = 4,540/x
  3. Step 3: Cross multiply
    3,988x = 4,540 × 4,540
  4. Step 4: Simplify right side
    3,988x = 20,611,600
  5. Step 5: Solve for x
    x = 20,611,600/3,988
  6. Step 6: Final answer
    x = 5,168.41

Related Problems

Find third proportional to 1,994 and 2,270
Half scale
Find third proportional to 7,976 and 9,080
Double scale
Find third proportional to 3,990 and 4,542
Similar ratio
Find third proportional to 5,982 and 6,810
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.