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Finding the Fourth Proportional to 3,479.90, 5,219.49 and 3,276.86

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Solution

The fourth proportional to 3,479.90, 5,219.49 and 3,276.86 is: 4,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.90 : 5,219.49 = 3,276.86 : x
  2. Step 2: Convert to fraction form
    3,479.90/5,219.49 = 3,276.86/x
  3. Step 3: Cross multiply
    3,479.90x = 5,219.49 × 3,276.86
  4. Step 4: Simplify right side
    3,479.90x = 17,103,538.00
  5. Step 5: Solve for x
    x = 17,103,538.00/3,479.90
  6. Step 6: Final answer
    x = 4,914.95

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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.