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Finding the Fourth Proportional to 7,485.37, 10,329.83 and 4,128.09

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Solution

The fourth proportional to 7,485.37, 10,329.83 and 4,128.09 is: 5,696.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.37 : 10,329.83 = 4,128.09 : x
  2. Step 2: Convert to fraction form
    7,485.37/10,329.83 = 4,128.09/x
  3. Step 3: Cross multiply
    7,485.37x = 10,329.83 × 4,128.09
  4. Step 4: Simplify right side
    7,485.37x = 42,642,447.28
  5. Step 5: Solve for x
    x = 42,642,447.28/7,485.37
  6. Step 6: Final answer
    x = 5,696.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.