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Finding the Fourth Proportional to 2,583.72, 3,873.29 and 939.98

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Solution

The fourth proportional to 2,583.72, 3,873.29 and 939.98 is: 1,409.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,583.72 : 3,873.29 = 939.98 : x
  2. Step 2: Convert to fraction form
    2,583.72/3,873.29 = 939.98/x
  3. Step 3: Cross multiply
    2,583.72x = 3,873.29 × 939.98
  4. Step 4: Simplify right side
    2,583.72x = 3,640,798.12
  5. Step 5: Solve for x
    x = 3,640,798.12/2,583.72
  6. Step 6: Final answer
    x = 1,409.13

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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.