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Finding the Fourth Proportional to 5,292.86, 7,936.44 and 2,171.92

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Solution

The fourth proportional to 5,292.86, 7,936.44 and 2,171.92 is: 3,256.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,292.86 : 7,936.44 = 2,171.92 : x
  2. Step 2: Convert to fraction form
    5,292.86/7,936.44 = 2,171.92/x
  3. Step 3: Cross multiply
    5,292.86x = 7,936.44 × 2,171.92
  4. Step 4: Simplify right side
    5,292.86x = 17,237,312.76
  5. Step 5: Solve for x
    x = 17,237,312.76/5,292.86
  6. Step 6: Final answer
    x = 3,256.71

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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.