Home / 1,207-1,869

Finding the Third Proportional to 1,207 and 1,869

Calculator

Solution

The third proportional to 1,207 and 1,869 is: 2,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207 : 1,869 = 1,869 : x
  2. Step 2: Convert to fraction form
    1,207/1,869 = 1,869/x
  3. Step 3: Cross multiply
    1,207x = 1,869 × 1,869
  4. Step 4: Simplify right side
    1,207x = 3,493,161
  5. Step 5: Solve for x
    x = 3,493,161/1,207
  6. Step 6: Final answer
    x = 2,894.09

Related Problems

Find third proportional to 603.50 and 934.50
Half scale
Find third proportional to 2,414 and 3,738
Double scale
Find third proportional to 1,209 and 1,872
Similar ratio
Find third proportional to 1,810.50 and 2,803.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.