Home / 3,405.75-5,112.27-1,678.02

Finding the Fourth Proportional to 3,405.75, 5,112.27 and 1,678.02

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Solution

The fourth proportional to 3,405.75, 5,112.27 and 1,678.02 is: 2,518.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.75 : 5,112.27 = 1,678.02 : x
  2. Step 2: Convert to fraction form
    3,405.75/5,112.27 = 1,678.02/x
  3. Step 3: Cross multiply
    3,405.75x = 5,112.27 × 1,678.02
  4. Step 4: Simplify right side
    3,405.75x = 8,578,491.31
  5. Step 5: Solve for x
    x = 8,578,491.31/3,405.75
  6. Step 6: Final answer
    x = 2,518.83

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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.