Home / 1,087-1,183

Finding the Third Proportional to 1,087 and 1,183

Calculator

Solution

The third proportional to 1,087 and 1,183 is: 1,287.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087 : 1,183 = 1,183 : x
  2. Step 2: Convert to fraction form
    1,087/1,183 = 1,183/x
  3. Step 3: Cross multiply
    1,087x = 1,183 × 1,183
  4. Step 4: Simplify right side
    1,087x = 1,399,489
  5. Step 5: Solve for x
    x = 1,399,489/1,087
  6. Step 6: Final answer
    x = 1,287.48

Related Problems

Find third proportional to 543.50 and 591.50
Half scale
Find third proportional to 2,174 and 2,366
Double scale
Find third proportional to 1,089 and 1,185
Similar ratio
Find third proportional to 1,630.50 and 1,774.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.