Home / 5,145.44-7,100.72-2,787.58

Finding the Fourth Proportional to 5,145.44, 7,100.72 and 2,787.58

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Solution

The fourth proportional to 5,145.44, 7,100.72 and 2,787.58 is: 3,846.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.44 : 7,100.72 = 2,787.58 : x
  2. Step 2: Convert to fraction form
    5,145.44/7,100.72 = 2,787.58/x
  3. Step 3: Cross multiply
    5,145.44x = 7,100.72 × 2,787.58
  4. Step 4: Simplify right side
    5,145.44x = 19,793,825.06
  5. Step 5: Solve for x
    x = 19,793,825.06/5,145.44
  6. Step 6: Final answer
    x = 3,846.87

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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.