Home / 4,090-8,642

Finding the Third Proportional to 4,090 and 8,642

Calculator

Solution

The third proportional to 4,090 and 8,642 is: 18,260.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090 : 8,642 = 8,642 : x
  2. Step 2: Convert to fraction form
    4,090/8,642 = 8,642/x
  3. Step 3: Cross multiply
    4,090x = 8,642 × 8,642
  4. Step 4: Simplify right side
    4,090x = 74,684,164
  5. Step 5: Solve for x
    x = 74,684,164/4,090
  6. Step 6: Final answer
    x = 18,260.19

Related Problems

Find third proportional to 2,045 and 4,321
Half scale
Find third proportional to 8,180 and 17,284
Double scale
Find third proportional to 4,092 and 8,646
Similar ratio
Find third proportional to 6,135 and 12,963
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.