Home / 853.50-1,605

Finding the Third Proportional to 853.50 and 1,605

Calculator

Solution

The third proportional to 853.50 and 1,605 is: 3,018.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    853.50 : 1,605 = 1,605 : x
  2. Step 2: Convert to fraction form
    853.50/1,605 = 1,605/x
  3. Step 3: Cross multiply
    853.50x = 1,605 × 1,605
  4. Step 4: Simplify right side
    853.50x = 2,576,025
  5. Step 5: Solve for x
    x = 2,576,025/853.50
  6. Step 6: Final answer
    x = 3,018.19

Related Problems

Find third proportional to 426.75 and 802.50
Half scale
Find third proportional to 1,707 and 3,210
Double scale
Find third proportional to 856 and 1,609
Similar ratio
Find third proportional to 1,280.25 and 2,407.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.