Home / 674-1,405

Finding the Third Proportional to 674 and 1,405

Calculator

Solution

The third proportional to 674 and 1,405 is: 2,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    674 : 1,405 = 1,405 : x
  2. Step 2: Convert to fraction form
    674/1,405 = 1,405/x
  3. Step 3: Cross multiply
    674x = 1,405 × 1,405
  4. Step 4: Simplify right side
    674x = 1,974,025
  5. Step 5: Solve for x
    x = 1,974,025/674
  6. Step 6: Final answer
    x = 2,928.82

Related Problems

Find third proportional to 337 and 702.50
Half scale
Find third proportional to 1,348 and 2,810
Double scale
Find third proportional to 676 and 1,409
Similar ratio
Find third proportional to 1,011 and 2,107.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.