Home / 3,120.15-4,678.06-1,171.83

Finding the Fourth Proportional to 3,120.15, 4,678.06 and 1,171.83

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Solution

The fourth proportional to 3,120.15, 4,678.06 and 1,171.83 is: 1,756.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.15 : 4,678.06 = 1,171.83 : x
  2. Step 2: Convert to fraction form
    3,120.15/4,678.06 = 1,171.83/x
  3. Step 3: Cross multiply
    3,120.15x = 4,678.06 × 1,171.83
  4. Step 4: Simplify right side
    3,120.15x = 5,481,891.05
  5. Step 5: Solve for x
    x = 5,481,891.05/3,120.15
  6. Step 6: Final answer
    x = 1,756.93

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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.