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Finding the Fourth Proportional to 3,936.96, 5,904.36 and 1,470.96

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Solution

The fourth proportional to 3,936.96, 5,904.36 and 1,470.96 is: 2,206.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.96 : 5,904.36 = 1,470.96 : x
  2. Step 2: Convert to fraction form
    3,936.96/5,904.36 = 1,470.96/x
  3. Step 3: Cross multiply
    3,936.96x = 5,904.36 × 1,470.96
  4. Step 4: Simplify right side
    3,936.96x = 8,685,077.39
  5. Step 5: Solve for x
    x = 8,685,077.39/3,936.96
  6. Step 6: Final answer
    x = 2,206.04

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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.