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Finding the Fourth Proportional to 7,843.82, 10,824.57 and 4,307.09

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Solution

The fourth proportional to 7,843.82, 10,824.57 and 4,307.09 is: 5,943.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,843.82 : 10,824.57 = 4,307.09 : x
  2. Step 2: Convert to fraction form
    7,843.82/10,824.57 = 4,307.09/x
  3. Step 3: Cross multiply
    7,843.82x = 10,824.57 × 4,307.09
  4. Step 4: Simplify right side
    7,843.82x = 46,622,343.08
  5. Step 5: Solve for x
    x = 46,622,343.08/7,843.82
  6. Step 6: Final answer
    x = 5,943.84

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Double scale
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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.