Home / 994-1,290

Finding the Third Proportional to 994 and 1,290

Calculator

Solution

The third proportional to 994 and 1,290 is: 1,674.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    994 : 1,290 = 1,290 : x
  2. Step 2: Convert to fraction form
    994/1,290 = 1,290/x
  3. Step 3: Cross multiply
    994x = 1,290 × 1,290
  4. Step 4: Simplify right side
    994x = 1,664,100
  5. Step 5: Solve for x
    x = 1,664,100/994
  6. Step 6: Final answer
    x = 1,674.14

Related Problems

Find third proportional to 497 and 645
Half scale
Find third proportional to 1,988 and 2,580
Double scale
Find third proportional to 996 and 1,293
Similar ratio
Find third proportional to 1,491 and 1,935
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.