Home / 871-1,216

Finding the Third Proportional to 871 and 1,216

Calculator

Solution

The third proportional to 871 and 1,216 is: 1,697.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    871 : 1,216 = 1,216 : x
  2. Step 2: Convert to fraction form
    871/1,216 = 1,216/x
  3. Step 3: Cross multiply
    871x = 1,216 × 1,216
  4. Step 4: Simplify right side
    871x = 1,478,656
  5. Step 5: Solve for x
    x = 1,478,656/871
  6. Step 6: Final answer
    x = 1,697.65

Related Problems

Find third proportional to 435.50 and 608
Half scale
Find third proportional to 1,742 and 2,432
Double scale
Find third proportional to 873 and 1,219
Similar ratio
Find third proportional to 1,306.50 and 1,824
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.