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Finding the Fourth Proportional to 8,290.56, 12,435.36 and 3,672

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Solution

The fourth proportional to 8,290.56, 12,435.36 and 3,672 is: 5,507.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.56 : 12,435.36 = 3,672 : x
  2. Step 2: Convert to fraction form
    8,290.56/12,435.36 = 3,672/x
  3. Step 3: Cross multiply
    8,290.56x = 12,435.36 × 3,672
  4. Step 4: Simplify right side
    8,290.56x = 45,662,641.92
  5. Step 5: Solve for x
    x = 45,662,641.92/8,290.56
  6. Step 6: Final answer
    x = 5,507.79

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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.