Home / 1,870.52-2,806-774.74

Finding the Fourth Proportional to 1,870.52, 2,806 and 774.74

Calculator

Solution

The fourth proportional to 1,870.52, 2,806 and 774.74 is: 1,162.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.52 : 2,806 = 774.74 : x
  2. Step 2: Convert to fraction form
    1,870.52/2,806 = 774.74/x
  3. Step 3: Cross multiply
    1,870.52x = 2,806 × 774.74
  4. Step 4: Simplify right side
    1,870.52x = 2,173,920.44
  5. Step 5: Solve for x
    x = 2,173,920.44/1,870.52
  6. Step 6: Final answer
    x = 1,162.20

Related Problems

Find fourth proportional to 935.26, 1,403 and 387.37
Half scale
Find fourth proportional to 3,741.04, 5,612 and 1,549.48
Double scale
Find fourth proportional to 1,871.52, 2,807.50 and 775.74
Similar ratio
Find fourth proportional to 2,805.78, 4,209 and 1,162.11
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.