Home / 5,042.72-7,564.89-2,121.86

Finding the Fourth Proportional to 5,042.72, 7,564.89 and 2,121.86

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Solution

The fourth proportional to 5,042.72, 7,564.89 and 2,121.86 is: 3,183.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,042.72 : 7,564.89 = 2,121.86 : x
  2. Step 2: Convert to fraction form
    5,042.72/7,564.89 = 2,121.86/x
  3. Step 3: Cross multiply
    5,042.72x = 7,564.89 × 2,121.86
  4. Step 4: Simplify right side
    5,042.72x = 16,051,599.67
  5. Step 5: Solve for x
    x = 16,051,599.67/5,042.72
  6. Step 6: Final answer
    x = 3,183.13

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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.