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Finding the Fourth Proportional to 5,291.86, 7,936.52 and 2,171.03

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Solution

The fourth proportional to 5,291.86, 7,936.52 and 2,171.03 is: 3,256.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,291.86 : 7,936.52 = 2,171.03 : x
  2. Step 2: Convert to fraction form
    5,291.86/7,936.52 = 2,171.03/x
  3. Step 3: Cross multiply
    5,291.86x = 7,936.52 × 2,171.03
  4. Step 4: Simplify right side
    5,291.86x = 17,230,423.02
  5. Step 5: Solve for x
    x = 17,230,423.02/5,291.86
  6. Step 6: Final answer
    x = 3,256.02

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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.