Home / 1,235.76-1,854-847.36

Finding the Fourth Proportional to 1,235.76, 1,854 and 847.36

Calculator

Solution

The fourth proportional to 1,235.76, 1,854 and 847.36 is: 1,271.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.76 : 1,854 = 847.36 : x
  2. Step 2: Convert to fraction form
    1,235.76/1,854 = 847.36/x
  3. Step 3: Cross multiply
    1,235.76x = 1,854 × 847.36
  4. Step 4: Simplify right side
    1,235.76x = 1,571,005.44
  5. Step 5: Solve for x
    x = 1,571,005.44/1,235.76
  6. Step 6: Final answer
    x = 1,271.29

Related Problems

Find fourth proportional to 617.88, 927 and 423.68
Half scale
Find fourth proportional to 2,471.52, 3,708 and 1,694.72
Double scale
Find fourth proportional to 1,236.76, 1,855.50 and 848.36
Similar ratio
Find fourth proportional to 1,853.64, 2,781 and 1,271.04
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.