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Finding the Fourth Proportional to 1,583.94, 2,184.81 and 993.96

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Solution

The fourth proportional to 1,583.94, 2,184.81 and 993.96 is: 1,371.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.94 : 2,184.81 = 993.96 : x
  2. Step 2: Convert to fraction form
    1,583.94/2,184.81 = 993.96/x
  3. Step 3: Cross multiply
    1,583.94x = 2,184.81 × 993.96
  4. Step 4: Simplify right side
    1,583.94x = 2,171,613.75
  5. Step 5: Solve for x
    x = 2,171,613.75/1,583.94
  6. Step 6: Final answer
    x = 1,371.02

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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.