Home / 4,212.45-6,318.42-1,290.75

Finding the Fourth Proportional to 4,212.45, 6,318.42 and 1,290.75

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Solution

The fourth proportional to 4,212.45, 6,318.42 and 1,290.75 is: 1,936.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.45 : 6,318.42 = 1,290.75 : x
  2. Step 2: Convert to fraction form
    4,212.45/6,318.42 = 1,290.75/x
  3. Step 3: Cross multiply
    4,212.45x = 6,318.42 × 1,290.75
  4. Step 4: Simplify right side
    4,212.45x = 8,155,500.62
  5. Step 5: Solve for x
    x = 8,155,500.62/4,212.45
  6. Step 6: Final answer
    x = 1,936.05

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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.