Home / 2,787.12-3,848.04-1,902.60

Finding the Fourth Proportional to 2,787.12, 3,848.04 and 1,902.60

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Solution

The fourth proportional to 2,787.12, 3,848.04 and 1,902.60 is: 2,626.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.12 : 3,848.04 = 1,902.60 : x
  2. Step 2: Convert to fraction form
    2,787.12/3,848.04 = 1,902.60/x
  3. Step 3: Cross multiply
    2,787.12x = 3,848.04 × 1,902.60
  4. Step 4: Simplify right side
    2,787.12x = 7,321,280.90
  5. Step 5: Solve for x
    x = 7,321,280.90/2,787.12
  6. Step 6: Final answer
    x = 2,626.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.