Home / 8,540-11,280

Finding the Third Proportional to 8,540 and 11,280

Calculator

Solution

The third proportional to 8,540 and 11,280 is: 14,899.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540 : 11,280 = 11,280 : x
  2. Step 2: Convert to fraction form
    8,540/11,280 = 11,280/x
  3. Step 3: Cross multiply
    8,540x = 11,280 × 11,280
  4. Step 4: Simplify right side
    8,540x = 127,238,400
  5. Step 5: Solve for x
    x = 127,238,400/8,540
  6. Step 6: Final answer
    x = 14,899.11

Related Problems

Find third proportional to 4,270 and 5,640
Half scale
Find third proportional to 17,080 and 22,560
Double scale
Find third proportional to 8,542 and 11,283
Similar ratio
Find third proportional to 12,810 and 16,920
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.