Home / 5,579.45-8,371.59-2,115.89

Finding the Fourth Proportional to 5,579.45, 8,371.59 and 2,115.89

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Solution

The fourth proportional to 5,579.45, 8,371.59 and 2,115.89 is: 3,174.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,579.45 : 8,371.59 = 2,115.89 : x
  2. Step 2: Convert to fraction form
    5,579.45/8,371.59 = 2,115.89/x
  3. Step 3: Cross multiply
    5,579.45x = 8,371.59 × 2,115.89
  4. Step 4: Simplify right side
    5,579.45x = 17,713,363.57
  5. Step 5: Solve for x
    x = 17,713,363.57/5,579.45
  6. Step 6: Final answer
    x = 3,174.75

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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.