Home / 5,618.61-8,428.83-2,108.89

Finding the Fourth Proportional to 5,618.61, 8,428.83 and 2,108.89

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Solution

The fourth proportional to 5,618.61, 8,428.83 and 2,108.89 is: 3,163.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.61 : 8,428.83 = 2,108.89 : x
  2. Step 2: Convert to fraction form
    5,618.61/8,428.83 = 2,108.89/x
  3. Step 3: Cross multiply
    5,618.61x = 8,428.83 × 2,108.89
  4. Step 4: Simplify right side
    5,618.61x = 17,775,477.93
  5. Step 5: Solve for x
    x = 17,775,477.93/5,618.61
  6. Step 6: Final answer
    x = 3,163.68

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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.