Home / 927-1,380.69-880.74

Finding the Fourth Proportional to 927, 1,380.69 and 880.74

Calculator

Solution

The fourth proportional to 927, 1,380.69 and 880.74 is: 1,311.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    927 : 1,380.69 = 880.74 : x
  2. Step 2: Convert to fraction form
    927/1,380.69 = 880.74/x
  3. Step 3: Cross multiply
    927x = 1,380.69 × 880.74
  4. Step 4: Simplify right side
    927x = 1,216,028.91
  5. Step 5: Solve for x
    x = 1,216,028.91/927
  6. Step 6: Final answer
    x = 1,311.79

Related Problems

Find fourth proportional to 463.50, 690.35 and 440.37
Half scale
Find fourth proportional to 1,854, 2,761.38 and 1,761.48
Double scale
Find fourth proportional to 928, 1,382.18 and 881.74
Similar ratio
Find fourth proportional to 1,390.50, 2,071.04 and 1,321.11
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.