Home / 5,145.75-7,101.14-2,787.89

Finding the Fourth Proportional to 5,145.75, 7,101.14 and 2,787.89

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Solution

The fourth proportional to 5,145.75, 7,101.14 and 2,787.89 is: 3,847.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.75 : 7,101.14 = 2,787.89 : x
  2. Step 2: Convert to fraction form
    5,145.75/7,101.14 = 2,787.89/x
  3. Step 3: Cross multiply
    5,145.75x = 7,101.14 × 2,787.89
  4. Step 4: Simplify right side
    5,145.75x = 19,797,201.01
  5. Step 5: Solve for x
    x = 19,797,201.01/5,145.75
  6. Step 6: Final answer
    x = 3,847.29

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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.