Home / 986.63-1,639.69

Finding the Third Proportional to 986.63 and 1,639.69

Calculator

Solution

The third proportional to 986.63 and 1,639.69 is: 2,725.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.63 : 1,639.69 = 1,639.69 : x
  2. Step 2: Convert to fraction form
    986.63/1,639.69 = 1,639.69/x
  3. Step 3: Cross multiply
    986.63x = 1,639.69 × 1,639.69
  4. Step 4: Simplify right side
    986.63x = 2,688,575.10
  5. Step 5: Solve for x
    x = 2,688,575.10/986.63
  6. Step 6: Final answer
    x = 2,725.02

Related Problems

Find third proportional to 493.31 and 819.84
Half scale
Find third proportional to 1,973.25 and 3,279.38
Double scale
Find third proportional to 989 and 1,643
Similar ratio
Find third proportional to 1,479.94 and 2,459.53
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.