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Finding the Fourth Proportional to 4,489.60, 6,731.50 and 1,891.84

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Solution

The fourth proportional to 4,489.60, 6,731.50 and 1,891.84 is: 2,836.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,489.60 : 6,731.50 = 1,891.84 : x
  2. Step 2: Convert to fraction form
    4,489.60/6,731.50 = 1,891.84/x
  3. Step 3: Cross multiply
    4,489.60x = 6,731.50 × 1,891.84
  4. Step 4: Simplify right side
    4,489.60x = 12,734,920.96
  5. Step 5: Solve for x
    x = 12,734,920.96/4,489.60
  6. Step 6: Final answer
    x = 2,836.54

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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.