Home / 3,386.42-5,081.79-1,438.62

Finding the Fourth Proportional to 3,386.42, 5,081.79 and 1,438.62

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Solution

The fourth proportional to 3,386.42, 5,081.79 and 1,438.62 is: 2,158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.42 : 5,081.79 = 1,438.62 : x
  2. Step 2: Convert to fraction form
    3,386.42/5,081.79 = 1,438.62/x
  3. Step 3: Cross multiply
    3,386.42x = 5,081.79 × 1,438.62
  4. Step 4: Simplify right side
    3,386.42x = 7,310,764.73
  5. Step 5: Solve for x
    x = 7,310,764.73/3,386.42
  6. Step 6: Final answer
    x = 2,158.85

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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.