Home / 5,145.62-7,100.96-2,787.75

Finding the Fourth Proportional to 5,145.62, 7,100.96 and 2,787.75

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Solution

The fourth proportional to 5,145.62, 7,100.96 and 2,787.75 is: 3,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.62 : 7,100.96 = 2,787.75 : x
  2. Step 2: Convert to fraction form
    5,145.62/7,100.96 = 2,787.75/x
  3. Step 3: Cross multiply
    5,145.62x = 7,100.96 × 2,787.75
  4. Step 4: Simplify right side
    5,145.62x = 19,795,687.30
  5. Step 5: Solve for x
    x = 19,795,687.30/5,145.62
  6. Step 6: Final answer
    x = 3,847.10

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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.