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Finding the Fourth Proportional to 7,828.68, 10,804.20 and 4,843.80

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Solution

The fourth proportional to 7,828.68, 10,804.20 and 4,843.80 is: 6,684.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.68 : 10,804.20 = 4,843.80 : x
  2. Step 2: Convert to fraction form
    7,828.68/10,804.20 = 4,843.80/x
  3. Step 3: Cross multiply
    7,828.68x = 10,804.20 × 4,843.80
  4. Step 4: Simplify right side
    7,828.68x = 52,333,383.96
  5. Step 5: Solve for x
    x = 52,333,383.96/7,828.68
  6. Step 6: Final answer
    x = 6,684.83

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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.