Home / 7,821.72-11,728.92-4,535.82

Finding the Fourth Proportional to 7,821.72, 11,728.92 and 4,535.82

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Solution

The fourth proportional to 7,821.72, 11,728.92 and 4,535.82 is: 6,801.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.72 : 11,728.92 = 4,535.82 : x
  2. Step 2: Convert to fraction form
    7,821.72/11,728.92 = 4,535.82/x
  3. Step 3: Cross multiply
    7,821.72x = 11,728.92 × 4,535.82
  4. Step 4: Simplify right side
    7,821.72x = 53,200,269.91
  5. Step 5: Solve for x
    x = 53,200,269.91/7,821.72
  6. Step 6: Final answer
    x = 6,801.61

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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.