Home / 890.72-1,129.92

Finding the Third Proportional to 890.72 and 1,129.92

Calculator

Solution

The third proportional to 890.72 and 1,129.92 is: 1,433.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.72 : 1,129.92 = 1,129.92 : x
  2. Step 2: Convert to fraction form
    890.72/1,129.92 = 1,129.92/x
  3. Step 3: Cross multiply
    890.72x = 1,129.92 × 1,129.92
  4. Step 4: Simplify right side
    890.72x = 1,276,723.44
  5. Step 5: Solve for x
    x = 1,276,723.44/890.72
  6. Step 6: Final answer
    x = 1,433.36

Related Problems

Find third proportional to 445.36 and 564.96
Half scale
Find third proportional to 1,781.44 and 2,259.84
Double scale
Find third proportional to 893 and 1,132
Similar ratio
Find third proportional to 1,336.08 and 1,694.88
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.