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Finding the Fourth Proportional to 5,171.67, 7,752.13 and 2,945.75

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Solution

The fourth proportional to 5,171.67, 7,752.13 and 2,945.75 is: 4,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.67 : 7,752.13 = 2,945.75 : x
  2. Step 2: Convert to fraction form
    5,171.67/7,752.13 = 2,945.75/x
  3. Step 3: Cross multiply
    5,171.67x = 7,752.13 × 2,945.75
  4. Step 4: Simplify right side
    5,171.67x = 22,835,790.82
  5. Step 5: Solve for x
    x = 22,835,790.82/5,171.67
  6. Step 6: Final answer
    x = 4,415.55

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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.