Home / 9,128-11,320

Finding the Third Proportional to 9,128 and 11,320

Calculator

Solution

The third proportional to 9,128 and 11,320 is: 14,038.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128 : 11,320 = 11,320 : x
  2. Step 2: Convert to fraction form
    9,128/11,320 = 11,320/x
  3. Step 3: Cross multiply
    9,128x = 11,320 × 11,320
  4. Step 4: Simplify right side
    9,128x = 128,142,400
  5. Step 5: Solve for x
    x = 128,142,400/9,128
  6. Step 6: Final answer
    x = 14,038.39

Related Problems

Find third proportional to 4,564 and 5,660
Half scale
Find third proportional to 18,256 and 22,640
Double scale
Find third proportional to 9,130 and 11,322
Similar ratio
Find third proportional to 13,692 and 16,980
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.