Home / 1,118-1,379

Finding the Third Proportional to 1,118 and 1,379

Calculator

Solution

The third proportional to 1,118 and 1,379 is: 1,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118 : 1,379 = 1,379 : x
  2. Step 2: Convert to fraction form
    1,118/1,379 = 1,379/x
  3. Step 3: Cross multiply
    1,118x = 1,379 × 1,379
  4. Step 4: Simplify right side
    1,118x = 1,901,641
  5. Step 5: Solve for x
    x = 1,901,641/1,118
  6. Step 6: Final answer
    x = 1,700.93

Related Problems

Find third proportional to 559 and 689.50
Half scale
Find third proportional to 2,236 and 2,758
Double scale
Find third proportional to 1,120 and 1,381
Similar ratio
Find third proportional to 1,677 and 2,068.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.