Home / 3,636-8,421

Finding the Third Proportional to 3,636 and 8,421

Calculator

Solution

The third proportional to 3,636 and 8,421 is: 19,503.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636 : 8,421 = 8,421 : x
  2. Step 2: Convert to fraction form
    3,636/8,421 = 8,421/x
  3. Step 3: Cross multiply
    3,636x = 8,421 × 8,421
  4. Step 4: Simplify right side
    3,636x = 70,913,241
  5. Step 5: Solve for x
    x = 70,913,241/3,636
  6. Step 6: Final answer
    x = 19,503.09

Related Problems

Find third proportional to 1,818 and 4,210.50
Half scale
Find third proportional to 7,272 and 16,842
Double scale
Find third proportional to 3,638 and 8,426
Similar ratio
Find third proportional to 5,454 and 12,631.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.