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Finding the Fourth Proportional to 4,375.96, 6,558.36 and 2,815.36

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Solution

The fourth proportional to 4,375.96, 6,558.36 and 2,815.36 is: 4,219.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,375.96 : 6,558.36 = 2,815.36 : x
  2. Step 2: Convert to fraction form
    4,375.96/6,558.36 = 2,815.36/x
  3. Step 3: Cross multiply
    4,375.96x = 6,558.36 × 2,815.36
  4. Step 4: Simplify right side
    4,375.96x = 18,464,144.41
  5. Step 5: Solve for x
    x = 18,464,144.41/4,375.96
  6. Step 6: Final answer
    x = 4,219.45

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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.