Home / 917.18-1,261.92-806.46

Finding the Fourth Proportional to 917.18, 1,261.92 and 806.46

Calculator

Solution

The fourth proportional to 917.18, 1,261.92 and 806.46 is: 1,109.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.18 : 1,261.92 = 806.46 : x
  2. Step 2: Convert to fraction form
    917.18/1,261.92 = 806.46/x
  3. Step 3: Cross multiply
    917.18x = 1,261.92 × 806.46
  4. Step 4: Simplify right side
    917.18x = 1,017,688.00
  5. Step 5: Solve for x
    x = 1,017,688.00/917.18
  6. Step 6: Final answer
    x = 1,109.59

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.