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Finding the Fourth Proportional to 3,885.36, 5,827.04 and 1,111.44

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Solution

The fourth proportional to 3,885.36, 5,827.04 and 1,111.44 is: 1,666.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.36 : 5,827.04 = 1,111.44 : x
  2. Step 2: Convert to fraction form
    3,885.36/5,827.04 = 1,111.44/x
  3. Step 3: Cross multiply
    3,885.36x = 5,827.04 × 1,111.44
  4. Step 4: Simplify right side
    3,885.36x = 6,476,405.34
  5. Step 5: Solve for x
    x = 6,476,405.34/3,885.36
  6. Step 6: Final answer
    x = 1,666.87

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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.