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Finding the Fourth Proportional to 3,101.44, 4,653.10 and 993

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Solution

The fourth proportional to 3,101.44, 4,653.10 and 993 is: 1,489.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.44 : 4,653.10 = 993 : x
  2. Step 2: Convert to fraction form
    3,101.44/4,653.10 = 993/x
  3. Step 3: Cross multiply
    3,101.44x = 4,653.10 × 993
  4. Step 4: Simplify right side
    3,101.44x = 4,620,528.30
  5. Step 5: Solve for x
    x = 4,620,528.30/3,101.44
  6. Step 6: Final answer
    x = 1,489.80

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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.