Home / 1,871.42-2,808.15-776.54

Finding the Fourth Proportional to 1,871.42, 2,808.15 and 776.54

Calculator

Solution

The fourth proportional to 1,871.42, 2,808.15 and 776.54 is: 1,165.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.42 : 2,808.15 = 776.54 : x
  2. Step 2: Convert to fraction form
    1,871.42/2,808.15 = 776.54/x
  3. Step 3: Cross multiply
    1,871.42x = 2,808.15 × 776.54
  4. Step 4: Simplify right side
    1,871.42x = 2,180,622.88
  5. Step 5: Solve for x
    x = 2,180,622.88/1,871.42
  6. Step 6: Final answer
    x = 1,165.22

Related Problems

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.