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Finding the Fourth Proportional to 3,884.91, 5,827.55 and 1,111.98

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Solution

The fourth proportional to 3,884.91, 5,827.55 and 1,111.98 is: 1,668.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,884.91 : 5,827.55 = 1,111.98 : x
  2. Step 2: Convert to fraction form
    3,884.91/5,827.55 = 1,111.98/x
  3. Step 3: Cross multiply
    3,884.91x = 5,827.55 × 1,111.98
  4. Step 4: Simplify right side
    3,884.91x = 6,480,119.05
  5. Step 5: Solve for x
    x = 6,480,119.05/3,884.91
  6. Step 6: Final answer
    x = 1,668.02

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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.