Home / 4,778.37-7,163.46-1,815.15

Finding the Fourth Proportional to 4,778.37, 7,163.46 and 1,815.15

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Solution

The fourth proportional to 4,778.37, 7,163.46 and 1,815.15 is: 2,721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.37 : 7,163.46 = 1,815.15 : x
  2. Step 2: Convert to fraction form
    4,778.37/7,163.46 = 1,815.15/x
  3. Step 3: Cross multiply
    4,778.37x = 7,163.46 × 1,815.15
  4. Step 4: Simplify right side
    4,778.37x = 13,002,754.42
  5. Step 5: Solve for x
    x = 13,002,754.42/4,778.37
  6. Step 6: Final answer
    x = 2,721.17

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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.