Home / 5,440-8,121

Finding the Third Proportional to 5,440 and 8,121

Calculator

Solution

The third proportional to 5,440 and 8,121 is: 12,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440 : 8,121 = 8,121 : x
  2. Step 2: Convert to fraction form
    5,440/8,121 = 8,121/x
  3. Step 3: Cross multiply
    5,440x = 8,121 × 8,121
  4. Step 4: Simplify right side
    5,440x = 65,950,641
  5. Step 5: Solve for x
    x = 65,950,641/5,440
  6. Step 6: Final answer
    x = 12,123.28

Related Problems

Find third proportional to 2,720 and 4,060.50
Half scale
Find third proportional to 10,880 and 16,242
Double scale
Find third proportional to 5,442 and 8,124
Similar ratio
Find third proportional to 8,160 and 12,181.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.