Home / 3,578.82-5,366.74-1,386.29

Finding the Fourth Proportional to 3,578.82, 5,366.74 and 1,386.29

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Solution

The fourth proportional to 3,578.82, 5,366.74 and 1,386.29 is: 2,078.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.82 : 5,366.74 = 1,386.29 : x
  2. Step 2: Convert to fraction form
    3,578.82/5,366.74 = 1,386.29/x
  3. Step 3: Cross multiply
    3,578.82x = 5,366.74 × 1,386.29
  4. Step 4: Simplify right side
    3,578.82x = 7,439,827.70
  5. Step 5: Solve for x
    x = 7,439,827.70/3,578.82
  6. Step 6: Final answer
    x = 2,078.85

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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.