Home / 1,998-4,209.75

Finding the Third Proportional to 1,998 and 4,209.75

Calculator

Solution

The third proportional to 1,998 and 4,209.75 is: 8,869.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998 : 4,209.75 = 4,209.75 : x
  2. Step 2: Convert to fraction form
    1,998/4,209.75 = 4,209.75/x
  3. Step 3: Cross multiply
    1,998x = 4,209.75 × 4,209.75
  4. Step 4: Simplify right side
    1,998x = 17,721,995.06
  5. Step 5: Solve for x
    x = 17,721,995.06/1,998
  6. Step 6: Final answer
    x = 8,869.87

Related Problems

Find third proportional to 999 and 2,104.88
Half scale
Find third proportional to 3,996 and 8,419.50
Double scale
Find third proportional to 2,000 and 4,214
Similar ratio
Find third proportional to 2,997 and 6,314.63
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.