Home / 1,581.61-2,183.08-918.76

Finding the Fourth Proportional to 1,581.61, 2,183.08 and 918.76

Calculator

Solution

The fourth proportional to 1,581.61, 2,183.08 and 918.76 is: 1,268.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.61 : 2,183.08 = 918.76 : x
  2. Step 2: Convert to fraction form
    1,581.61/2,183.08 = 918.76/x
  3. Step 3: Cross multiply
    1,581.61x = 2,183.08 × 918.76
  4. Step 4: Simplify right side
    1,581.61x = 2,005,713.37
  5. Step 5: Solve for x
    x = 2,005,713.37/1,581.61
  6. Step 6: Final answer
    x = 1,268.15

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.