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Finding the Fourth Proportional to 2,787.90, 4,174.56 and 1,482.99

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Solution

The fourth proportional to 2,787.90, 4,174.56 and 1,482.99 is: 2,220.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.90 : 4,174.56 = 1,482.99 : x
  2. Step 2: Convert to fraction form
    2,787.90/4,174.56 = 1,482.99/x
  3. Step 3: Cross multiply
    2,787.90x = 4,174.56 × 1,482.99
  4. Step 4: Simplify right side
    2,787.90x = 6,190,830.73
  5. Step 5: Solve for x
    x = 6,190,830.73/2,787.90
  6. Step 6: Final answer
    x = 2,220.61

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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.