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Finding the Fourth Proportional to 5,721.50, 7,895.79 and 3,237.50

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Solution

The fourth proportional to 5,721.50, 7,895.79 and 3,237.50 is: 4,467.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,721.50 : 7,895.79 = 3,237.50 : x
  2. Step 2: Convert to fraction form
    5,721.50/7,895.79 = 3,237.50/x
  3. Step 3: Cross multiply
    5,721.50x = 7,895.79 × 3,237.50
  4. Step 4: Simplify right side
    5,721.50x = 25,562,620.13
  5. Step 5: Solve for x
    x = 25,562,620.13/5,721.50
  6. Step 6: Final answer
    x = 4,467.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.