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Finding the Fourth Proportional to 3,338.06, 5,007.38 and 872.87

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Solution

The fourth proportional to 3,338.06, 5,007.38 and 872.87 is: 1,309.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,338.06 : 5,007.38 = 872.87 : x
  2. Step 2: Convert to fraction form
    3,338.06/5,007.38 = 872.87/x
  3. Step 3: Cross multiply
    3,338.06x = 5,007.38 × 872.87
  4. Step 4: Simplify right side
    3,338.06x = 4,370,762.38
  5. Step 5: Solve for x
    x = 4,370,762.38/3,338.06
  6. Step 6: Final answer
    x = 1,309.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.