Home / 774.56-1,685.81

Finding the Third Proportional to 774.56 and 1,685.81

Calculator

Solution

The third proportional to 774.56 and 1,685.81 is: 3,669.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    774.56 : 1,685.81 = 1,685.81 : x
  2. Step 2: Convert to fraction form
    774.56/1,685.81 = 1,685.81/x
  3. Step 3: Cross multiply
    774.56x = 1,685.81 × 1,685.81
  4. Step 4: Simplify right side
    774.56x = 2,841,963.79
  5. Step 5: Solve for x
    x = 2,841,963.79/774.56
  6. Step 6: Final answer
    x = 3,669.12

Related Problems

Find third proportional to 387.28 and 842.91
Half scale
Find third proportional to 1,549.13 and 3,371.63
Double scale
Find third proportional to 777 and 1,690
Similar ratio
Find third proportional to 1,161.84 and 2,528.72
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.