Home / 5,285.94-7,921.91-2,815.44

Finding the Fourth Proportional to 5,285.94, 7,921.91 and 2,815.44

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Solution

The fourth proportional to 5,285.94, 7,921.91 and 2,815.44 is: 4,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.94 : 7,921.91 = 2,815.44 : x
  2. Step 2: Convert to fraction form
    5,285.94/7,921.91 = 2,815.44/x
  3. Step 3: Cross multiply
    5,285.94x = 7,921.91 × 2,815.44
  4. Step 4: Simplify right side
    5,285.94x = 22,303,662.29
  5. Step 5: Solve for x
    x = 22,303,662.29/5,285.94
  6. Step 6: Final answer
    x = 4,219.43

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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.