Home / 5,415.69-8,121.11-1,717.23

Finding the Fourth Proportional to 5,415.69, 8,121.11 and 1,717.23

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Solution

The fourth proportional to 5,415.69, 8,121.11 and 1,717.23 is: 2,575.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.69 : 8,121.11 = 1,717.23 : x
  2. Step 2: Convert to fraction form
    5,415.69/8,121.11 = 1,717.23/x
  3. Step 3: Cross multiply
    5,415.69x = 8,121.11 × 1,717.23
  4. Step 4: Simplify right side
    5,415.69x = 13,945,805.14
  5. Step 5: Solve for x
    x = 13,945,805.14/5,415.69
  6. Step 6: Final answer
    x = 2,575.07

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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.