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Finding the Fourth Proportional to 7,028.36, 9,699 and 3,884.56

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Solution

The fourth proportional to 7,028.36, 9,699 and 3,884.56 is: 5,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,028.36 : 9,699 = 3,884.56 : x
  2. Step 2: Convert to fraction form
    7,028.36/9,699 = 3,884.56/x
  3. Step 3: Cross multiply
    7,028.36x = 9,699 × 3,884.56
  4. Step 4: Simplify right side
    7,028.36x = 37,676,347.44
  5. Step 5: Solve for x
    x = 37,676,347.44/7,028.36
  6. Step 6: Final answer
    x = 5,360.62

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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.