Home / 2,904-7,128

Finding the Third Proportional to 2,904 and 7,128

Calculator

Solution

The third proportional to 2,904 and 7,128 is: 17,496

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,904 : 7,128 = 7,128 : x
  2. Step 2: Convert to fraction form
    2,904/7,128 = 7,128/x
  3. Step 3: Cross multiply
    2,904x = 7,128 × 7,128
  4. Step 4: Simplify right side
    2,904x = 50,808,384
  5. Step 5: Solve for x
    x = 50,808,384/2,904
  6. Step 6: Final answer
    x = 17,496

Related Problems

Find third proportional to 1,452 and 3,564
Half scale
Find third proportional to 5,808 and 14,256
Double scale
Find third proportional to 2,906 and 7,133
Similar ratio
Find third proportional to 4,356 and 10,692
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.