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Finding the Fourth Proportional to 7,028.73, 9,699.64 and 3,884.92

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Solution

The fourth proportional to 7,028.73, 9,699.64 and 3,884.92 is: 5,361.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,028.73 : 9,699.64 = 3,884.92 : x
  2. Step 2: Convert to fraction form
    7,028.73/9,699.64 = 3,884.92/x
  3. Step 3: Cross multiply
    7,028.73x = 9,699.64 × 3,884.92
  4. Step 4: Simplify right side
    7,028.73x = 37,682,291.47
  5. Step 5: Solve for x
    x = 37,682,291.47/7,028.73
  6. Step 6: Final answer
    x = 5,361.18

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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.