Home / 708.75-1,642.50

Finding the Third Proportional to 708.75 and 1,642.50

Calculator

Solution

The third proportional to 708.75 and 1,642.50 is: 3,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.75 : 1,642.50 = 1,642.50 : x
  2. Step 2: Convert to fraction form
    708.75/1,642.50 = 1,642.50/x
  3. Step 3: Cross multiply
    708.75x = 1,642.50 × 1,642.50
  4. Step 4: Simplify right side
    708.75x = 2,697,806.25
  5. Step 5: Solve for x
    x = 2,697,806.25/708.75
  6. Step 6: Final answer
    x = 3,806.43

Related Problems

Find third proportional to 354.38 and 821.25
Half scale
Find third proportional to 1,417.50 and 3,285
Double scale
Find third proportional to 711 and 1,647
Similar ratio
Find third proportional to 1,063.13 and 2,463.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.