Home / 2,380.32-3,571.02-1,285.74

Finding the Fourth Proportional to 2,380.32, 3,571.02 and 1,285.74

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Solution

The fourth proportional to 2,380.32, 3,571.02 and 1,285.74 is: 1,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.32 : 3,571.02 = 1,285.74 : x
  2. Step 2: Convert to fraction form
    2,380.32/3,571.02 = 1,285.74/x
  3. Step 3: Cross multiply
    2,380.32x = 3,571.02 × 1,285.74
  4. Step 4: Simplify right side
    2,380.32x = 4,591,403.25
  5. Step 5: Solve for x
    x = 4,591,403.25/2,380.32
  6. Step 6: Final answer
    x = 1,928.90

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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.