Home / 1,787-2,807

Finding the Third Proportional to 1,787 and 2,807

Calculator

Solution

The third proportional to 1,787 and 2,807 is: 4,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787 : 2,807 = 2,807 : x
  2. Step 2: Convert to fraction form
    1,787/2,807 = 2,807/x
  3. Step 3: Cross multiply
    1,787x = 2,807 × 2,807
  4. Step 4: Simplify right side
    1,787x = 7,879,249
  5. Step 5: Solve for x
    x = 7,879,249/1,787
  6. Step 6: Final answer
    x = 4,409.20

Related Problems

Find third proportional to 893.50 and 1,403.50
Half scale
Find third proportional to 3,574 and 5,614
Double scale
Find third proportional to 1,789 and 2,810
Similar ratio
Find third proportional to 2,680.50 and 4,210.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.