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Finding the Fourth Proportional to 3,019.84, 4,518.80 and 1,787.84

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Solution

The fourth proportional to 3,019.84, 4,518.80 and 1,787.84 is: 2,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,019.84 : 4,518.80 = 1,787.84 : x
  2. Step 2: Convert to fraction form
    3,019.84/4,518.80 = 1,787.84/x
  3. Step 3: Cross multiply
    3,019.84x = 4,518.80 × 1,787.84
  4. Step 4: Simplify right side
    3,019.84x = 8,078,891.39
  5. Step 5: Solve for x
    x = 8,078,891.39/3,019.84
  6. Step 6: Final answer
    x = 2,675.27

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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.