Home / 2,135.20-3,203.60-964.86

Finding the Fourth Proportional to 2,135.20, 3,203.60 and 964.86

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Solution

The fourth proportional to 2,135.20, 3,203.60 and 964.86 is: 1,447.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.20 : 3,203.60 = 964.86 : x
  2. Step 2: Convert to fraction form
    2,135.20/3,203.60 = 964.86/x
  3. Step 3: Cross multiply
    2,135.20x = 3,203.60 × 964.86
  4. Step 4: Simplify right side
    2,135.20x = 3,091,025.50
  5. Step 5: Solve for x
    x = 3,091,025.50/2,135.20
  6. Step 6: Final answer
    x = 1,447.65

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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.