Home / 3,200.79-4,415.72-2,005.05

Finding the Fourth Proportional to 3,200.79, 4,415.72 and 2,005.05

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Solution

The fourth proportional to 3,200.79, 4,415.72 and 2,005.05 is: 2,766.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,200.79 : 4,415.72 = 2,005.05 : x
  2. Step 2: Convert to fraction form
    3,200.79/4,415.72 = 2,005.05/x
  3. Step 3: Cross multiply
    3,200.79x = 4,415.72 × 2,005.05
  4. Step 4: Simplify right side
    3,200.79x = 8,853,745.92
  5. Step 5: Solve for x
    x = 8,853,745.92/3,200.79
  6. Step 6: Final answer
    x = 2,766.11

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1.5x scale

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.