Home / 911.19-1,987.13

Finding the Third Proportional to 911.19 and 1,987.13

Calculator

Solution

The third proportional to 911.19 and 1,987.13 is: 4,333.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.19 : 1,987.13 = 1,987.13 : x
  2. Step 2: Convert to fraction form
    911.19/1,987.13 = 1,987.13/x
  3. Step 3: Cross multiply
    911.19x = 1,987.13 × 1,987.13
  4. Step 4: Simplify right side
    911.19x = 3,948,665.77
  5. Step 5: Solve for x
    x = 3,948,665.77/911.19
  6. Step 6: Final answer
    x = 4,333.54

Related Problems

Find third proportional to 455.59 and 993.56
Half scale
Find third proportional to 1,822.38 and 3,974.25
Double scale
Find third proportional to 913 and 1,991
Similar ratio
Find third proportional to 1,366.78 and 2,980.69
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.