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Finding the Fourth Proportional to 5,328.18, 7,987.41 and 1,863.54

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Solution

The fourth proportional to 5,328.18, 7,987.41 and 1,863.54 is: 2,793.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.18 : 7,987.41 = 1,863.54 : x
  2. Step 2: Convert to fraction form
    5,328.18/7,987.41 = 1,863.54/x
  3. Step 3: Cross multiply
    5,328.18x = 7,987.41 × 1,863.54
  4. Step 4: Simplify right side
    5,328.18x = 14,884,858.03
  5. Step 5: Solve for x
    x = 14,884,858.03/5,328.18
  6. Step 6: Final answer
    x = 2,793.61

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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.