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Finding the Fourth Proportional to 3,685.08, 5,527.62 and 2,145

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Solution

The fourth proportional to 3,685.08, 5,527.62 and 2,145 is: 3,217.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.08 : 5,527.62 = 2,145 : x
  2. Step 2: Convert to fraction form
    3,685.08/5,527.62 = 2,145/x
  3. Step 3: Cross multiply
    3,685.08x = 5,527.62 × 2,145
  4. Step 4: Simplify right side
    3,685.08x = 11,856,744.90
  5. Step 5: Solve for x
    x = 11,856,744.90/3,685.08
  6. Step 6: Final answer
    x = 3,217.50

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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.