Home / 1,485.67-2,050-822.55

Finding the Fourth Proportional to 1,485.67, 2,050 and 822.55

Calculator

Solution

The fourth proportional to 1,485.67, 2,050 and 822.55 is: 1,134.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.67 : 2,050 = 822.55 : x
  2. Step 2: Convert to fraction form
    1,485.67/2,050 = 822.55/x
  3. Step 3: Cross multiply
    1,485.67x = 2,050 × 822.55
  4. Step 4: Simplify right side
    1,485.67x = 1,686,227.50
  5. Step 5: Solve for x
    x = 1,686,227.50/1,485.67
  6. Step 6: Final answer
    x = 1,134.99

Related Problems

Find fourth proportional to 742.84, 1,025 and 411.28
Half scale
Find fourth proportional to 2,971.34, 4,100 and 1,645.10
Double scale
Find fourth proportional to 1,486.67, 2,051.38 and 823.55
Similar ratio
Find fourth proportional to 2,228.51, 3,075 and 1,233.83
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.