Home / 2,856-4,284-804

Finding the Fourth Proportional to 2,856, 4,284 and 804

Calculator

Solution

The fourth proportional to 2,856, 4,284 and 804 is: 1,206

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856 : 4,284 = 804 : x
  2. Step 2: Convert to fraction form
    2,856/4,284 = 804/x
  3. Step 3: Cross multiply
    2,856x = 4,284 × 804
  4. Step 4: Simplify right side
    2,856x = 3,444,336
  5. Step 5: Solve for x
    x = 3,444,336/2,856
  6. Step 6: Final answer
    x = 1,206

Related Problems

Find fourth proportional to 1,428, 2,142 and 402
Half scale
Find fourth proportional to 5,712, 8,568 and 1,608
Double scale
Find fourth proportional to 2,857, 4,285.50 and 805
Similar ratio
Find fourth proportional to 4,284, 6,426 and 1,206
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.