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Finding the Fourth Proportional to 3,375.08, 5,059.71 and 1,428.65

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Solution

The fourth proportional to 3,375.08, 5,059.71 and 1,428.65 is: 2,141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.08 : 5,059.71 = 1,428.65 : x
  2. Step 2: Convert to fraction form
    3,375.08/5,059.71 = 1,428.65/x
  3. Step 3: Cross multiply
    3,375.08x = 5,059.71 × 1,428.65
  4. Step 4: Simplify right side
    3,375.08x = 7,228,529.39
  5. Step 5: Solve for x
    x = 7,228,529.39/3,375.08
  6. Step 6: Final answer
    x = 2,141.74

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1.5x scale

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.