Home / 8,181.20-11,290.11-4,644.47

Finding the Fourth Proportional to 8,181.20, 11,290.11 and 4,644.47

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Solution

The fourth proportional to 8,181.20, 11,290.11 and 4,644.47 is: 6,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.20 : 11,290.11 = 4,644.47 : x
  2. Step 2: Convert to fraction form
    8,181.20/11,290.11 = 4,644.47/x
  3. Step 3: Cross multiply
    8,181.20x = 11,290.11 × 4,644.47
  4. Step 4: Simplify right side
    8,181.20x = 52,436,577.19
  5. Step 5: Solve for x
    x = 52,436,577.19/8,181.20
  6. Step 6: Final answer
    x = 6,409.40

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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.