Home / 7,829.62-11,721.86-5,199.75

Finding the Fourth Proportional to 7,829.62, 11,721.86 and 5,199.75

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Solution

The fourth proportional to 7,829.62, 11,721.86 and 5,199.75 is: 7,784.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,829.62 : 11,721.86 = 5,199.75 : x
  2. Step 2: Convert to fraction form
    7,829.62/11,721.86 = 5,199.75/x
  3. Step 3: Cross multiply
    7,829.62x = 11,721.86 × 5,199.75
  4. Step 4: Simplify right side
    7,829.62x = 60,950,741.54
  5. Step 5: Solve for x
    x = 60,950,741.54/7,829.62
  6. Step 6: Final answer
    x = 7,784.64

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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.