Home / 1,116.40-1,540-674.08

Finding the Fourth Proportional to 1,116.40, 1,540 and 674.08

Calculator

Solution

The fourth proportional to 1,116.40, 1,540 and 674.08 is: 929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.40 : 1,540 = 674.08 : x
  2. Step 2: Convert to fraction form
    1,116.40/1,540 = 674.08/x
  3. Step 3: Cross multiply
    1,116.40x = 1,540 × 674.08
  4. Step 4: Simplify right side
    1,116.40x = 1,038,083.20
  5. Step 5: Solve for x
    x = 1,038,083.20/1,116.40
  6. Step 6: Final answer
    x = 929.85

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.