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Finding the Fourth Proportional to 7,821, 10,794.11 and 4,836.65

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Solution

The fourth proportional to 7,821, 10,794.11 and 4,836.65 is: 6,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821 : 10,794.11 = 4,836.65 : x
  2. Step 2: Convert to fraction form
    7,821/10,794.11 = 4,836.65/x
  3. Step 3: Cross multiply
    7,821x = 10,794.11 × 4,836.65
  4. Step 4: Simplify right side
    7,821x = 52,207,253.98
  5. Step 5: Solve for x
    x = 52,207,253.98/7,821
  6. Step 6: Final answer
    x = 6,675.27

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1.5x scale

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.