Home / 1,331.82-1,998-510.06

Finding the Fourth Proportional to 1,331.82, 1,998 and 510.06

Calculator

Solution

The fourth proportional to 1,331.82, 1,998 and 510.06 is: 765.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.82 : 1,998 = 510.06 : x
  2. Step 2: Convert to fraction form
    1,331.82/1,998 = 510.06/x
  3. Step 3: Cross multiply
    1,331.82x = 1,998 × 510.06
  4. Step 4: Simplify right side
    1,331.82x = 1,019,099.88
  5. Step 5: Solve for x
    x = 1,019,099.88/1,331.82
  6. Step 6: Final answer
    x = 765.19

Related Problems

Find fourth proportional to 665.91, 999 and 255.03
Half scale
Find fourth proportional to 2,663.64, 3,996 and 1,020.12
Double scale
Find fourth proportional to 1,332.82, 1,999.50 and 511.06
Similar ratio
Find fourth proportional to 1,997.73, 2,997 and 765.09
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.