Home / 1,054.86-1,581.48-324

Finding the Fourth Proportional to 1,054.86, 1,581.48 and 324

Calculator

Solution

The fourth proportional to 1,054.86, 1,581.48 and 324 is: 485.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.86 : 1,581.48 = 324 : x
  2. Step 2: Convert to fraction form
    1,054.86/1,581.48 = 324/x
  3. Step 3: Cross multiply
    1,054.86x = 1,581.48 × 324
  4. Step 4: Simplify right side
    1,054.86x = 512,399.52
  5. Step 5: Solve for x
    x = 512,399.52/1,054.86
  6. Step 6: Final answer
    x = 485.75

Related Problems

Find fourth proportional to 527.43, 790.74 and 162
Half scale
Find fourth proportional to 2,109.72, 3,162.96 and 648
Double scale
Find fourth proportional to 1,055.86, 1,582.98 and 325
Similar ratio
Find fourth proportional to 1,582.29, 2,372.22 and 486
1.5x scale

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.