Home / 3,131-5,578

Finding the Third Proportional to 3,131 and 5,578

Calculator

Solution

The third proportional to 3,131 and 5,578 is: 9,937.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131 : 5,578 = 5,578 : x
  2. Step 2: Convert to fraction form
    3,131/5,578 = 5,578/x
  3. Step 3: Cross multiply
    3,131x = 5,578 × 5,578
  4. Step 4: Simplify right side
    3,131x = 31,114,084
  5. Step 5: Solve for x
    x = 31,114,084/3,131
  6. Step 6: Final answer
    x = 9,937.43

Related Problems

Find third proportional to 1,565.50 and 2,789
Half scale
Find third proportional to 6,262 and 11,156
Double scale
Find third proportional to 3,133 and 5,582
Similar ratio
Find third proportional to 4,696.50 and 8,367
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.