Home / 5,813.54-8,721.58-2,115.68

Finding the Fourth Proportional to 5,813.54, 8,721.58 and 2,115.68

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Solution

The fourth proportional to 5,813.54, 8,721.58 and 2,115.68 is: 3,173.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,813.54 : 8,721.58 = 2,115.68 : x
  2. Step 2: Convert to fraction form
    5,813.54/8,721.58 = 2,115.68/x
  3. Step 3: Cross multiply
    5,813.54x = 8,721.58 × 2,115.68
  4. Step 4: Simplify right side
    5,813.54x = 18,452,072.37
  5. Step 5: Solve for x
    x = 18,452,072.37/5,813.54
  6. Step 6: Final answer
    x = 3,173.98

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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.