Home / 5,805.30-8,013.60-3,918

Finding the Fourth Proportional to 5,805.30, 8,013.60 and 3,918

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Solution

The fourth proportional to 5,805.30, 8,013.60 and 3,918 is: 5,408.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,805.30 : 8,013.60 = 3,918 : x
  2. Step 2: Convert to fraction form
    5,805.30/8,013.60 = 3,918/x
  3. Step 3: Cross multiply
    5,805.30x = 8,013.60 × 3,918
  4. Step 4: Simplify right side
    5,805.30x = 31,397,284.80
  5. Step 5: Solve for x
    x = 31,397,284.80/5,805.30
  6. Step 6: Final answer
    x = 5,408.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.