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Finding the Fourth Proportional to 3,289.86, 4,935.21 and 1,440.84

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Solution

The fourth proportional to 3,289.86, 4,935.21 and 1,440.84 is: 2,161.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.86 : 4,935.21 = 1,440.84 : x
  2. Step 2: Convert to fraction form
    3,289.86/4,935.21 = 1,440.84/x
  3. Step 3: Cross multiply
    3,289.86x = 4,935.21 × 1,440.84
  4. Step 4: Simplify right side
    3,289.86x = 7,110,847.98
  5. Step 5: Solve for x
    x = 7,110,847.98/3,289.86
  6. Step 6: Final answer
    x = 2,161.44

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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.