Home / 817.50-876

Finding the Third Proportional to 817.50 and 876

Calculator

Solution

The third proportional to 817.50 and 876 is: 938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.50 : 876 = 876 : x
  2. Step 2: Convert to fraction form
    817.50/876 = 876/x
  3. Step 3: Cross multiply
    817.50x = 876 × 876
  4. Step 4: Simplify right side
    817.50x = 767,376
  5. Step 5: Solve for x
    x = 767,376/817.50
  6. Step 6: Final answer
    x = 938.69

Related Problems

Find third proportional to 408.75 and 438
Half scale
Find third proportional to 1,635 and 1,752
Double scale
Find third proportional to 820 and 878
Similar ratio
Find third proportional to 1,226.25 and 1,314
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.