Home / 607.50-861

Finding the Third Proportional to 607.50 and 861

Calculator

Solution

The third proportional to 607.50 and 861 is: 1,220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.50 : 861 = 861 : x
  2. Step 2: Convert to fraction form
    607.50/861 = 861/x
  3. Step 3: Cross multiply
    607.50x = 861 × 861
  4. Step 4: Simplify right side
    607.50x = 741,321
  5. Step 5: Solve for x
    x = 741,321/607.50
  6. Step 6: Final answer
    x = 1,220.28

Related Problems

Find third proportional to 303.75 and 430.50
Half scale
Find third proportional to 1,215 and 1,722
Double scale
Find third proportional to 610 and 864
Similar ratio
Find third proportional to 911.25 and 1,291.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.