Home / 3,815.62-5,715.33-2,171.32

Finding the Fourth Proportional to 3,815.62, 5,715.33 and 2,171.32

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Solution

The fourth proportional to 3,815.62, 5,715.33 and 2,171.32 is: 3,252.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.62 : 5,715.33 = 2,171.32 : x
  2. Step 2: Convert to fraction form
    3,815.62/5,715.33 = 2,171.32/x
  3. Step 3: Cross multiply
    3,815.62x = 5,715.33 × 2,171.32
  4. Step 4: Simplify right side
    3,815.62x = 12,409,810.34
  5. Step 5: Solve for x
    x = 12,409,810.34/3,815.62
  6. Step 6: Final answer
    x = 3,252.37

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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.