Home / 2,818.10-3,888.84-1,638.98

Finding the Fourth Proportional to 2,818.10, 3,888.84 and 1,638.98

Calculator

Solution

The fourth proportional to 2,818.10, 3,888.84 and 1,638.98 is: 2,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.10 : 3,888.84 = 1,638.98 : x
  2. Step 2: Convert to fraction form
    2,818.10/3,888.84 = 1,638.98/x
  3. Step 3: Cross multiply
    2,818.10x = 3,888.84 × 1,638.98
  4. Step 4: Simplify right side
    2,818.10x = 6,373,730.98
  5. Step 5: Solve for x
    x = 6,373,730.98/2,818.10
  6. Step 6: Final answer
    x = 2,261.71

Related Problems

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.