Home / 4,140-9,009

Finding the Third Proportional to 4,140 and 9,009

Calculator

Solution

The third proportional to 4,140 and 9,009 is: 19,604.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140 : 9,009 = 9,009 : x
  2. Step 2: Convert to fraction form
    4,140/9,009 = 9,009/x
  3. Step 3: Cross multiply
    4,140x = 9,009 × 9,009
  4. Step 4: Simplify right side
    4,140x = 81,162,081
  5. Step 5: Solve for x
    x = 81,162,081/4,140
  6. Step 6: Final answer
    x = 19,604.37

Related Problems

Find third proportional to 2,070 and 4,504.50
Half scale
Find third proportional to 8,280 and 18,018
Double scale
Find third proportional to 4,142 and 9,013
Similar ratio
Find third proportional to 6,210 and 13,513.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.