Home / 903-1,311

Finding the Third Proportional to 903 and 1,311

Calculator

Solution

The third proportional to 903 and 1,311 is: 1,903.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    903 : 1,311 = 1,311 : x
  2. Step 2: Convert to fraction form
    903/1,311 = 1,311/x
  3. Step 3: Cross multiply
    903x = 1,311 × 1,311
  4. Step 4: Simplify right side
    903x = 1,718,721
  5. Step 5: Solve for x
    x = 1,718,721/903
  6. Step 6: Final answer
    x = 1,903.35

Related Problems

Find third proportional to 451.50 and 655.50
Half scale
Find third proportional to 1,806 and 2,622
Double scale
Find third proportional to 905 and 1,314
Similar ratio
Find third proportional to 1,354.50 and 1,966.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.