Home / 3,500-7,728

Finding the Third Proportional to 3,500 and 7,728

Calculator

Solution

The third proportional to 3,500 and 7,728 is: 17,063.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500 : 7,728 = 7,728 : x
  2. Step 2: Convert to fraction form
    3,500/7,728 = 7,728/x
  3. Step 3: Cross multiply
    3,500x = 7,728 × 7,728
  4. Step 4: Simplify right side
    3,500x = 59,721,984
  5. Step 5: Solve for x
    x = 59,721,984/3,500
  6. Step 6: Final answer
    x = 17,063.42

Related Problems

Find third proportional to 1,750 and 3,864
Half scale
Find third proportional to 7,000 and 15,456
Double scale
Find third proportional to 3,502 and 7,732
Similar ratio
Find third proportional to 5,250 and 11,592
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.