Home / 3,984-7,620

Finding the Third Proportional to 3,984 and 7,620

Calculator

Solution

The third proportional to 3,984 and 7,620 is: 14,574.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984 : 7,620 = 7,620 : x
  2. Step 2: Convert to fraction form
    3,984/7,620 = 7,620/x
  3. Step 3: Cross multiply
    3,984x = 7,620 × 7,620
  4. Step 4: Simplify right side
    3,984x = 58,064,400
  5. Step 5: Solve for x
    x = 58,064,400/3,984
  6. Step 6: Final answer
    x = 14,574.40

Related Problems

Find third proportional to 1,992 and 3,810
Half scale
Find third proportional to 7,968 and 15,240
Double scale
Find third proportional to 3,986 and 7,624
Similar ratio
Find third proportional to 5,976 and 11,430
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.