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Finding the Fourth Proportional to 3,951.98, 5,928.61 and 1,486.99

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Solution

The fourth proportional to 3,951.98, 5,928.61 and 1,486.99 is: 2,230.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.98 : 5,928.61 = 1,486.99 : x
  2. Step 2: Convert to fraction form
    3,951.98/5,928.61 = 1,486.99/x
  3. Step 3: Cross multiply
    3,951.98x = 5,928.61 × 1,486.99
  4. Step 4: Simplify right side
    3,951.98x = 8,815,783.78
  5. Step 5: Solve for x
    x = 8,815,783.78/3,951.98
  6. Step 6: Final answer
    x = 2,230.73

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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.