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Finding the Fourth Proportional to 5,249.69, 7,874.53 and 1,786.94

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Solution

The fourth proportional to 5,249.69, 7,874.53 and 1,786.94 is: 2,680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.69 : 7,874.53 = 1,786.94 : x
  2. Step 2: Convert to fraction form
    5,249.69/7,874.53 = 1,786.94/x
  3. Step 3: Cross multiply
    5,249.69x = 7,874.53 × 1,786.94
  4. Step 4: Simplify right side
    5,249.69x = 14,071,312.64
  5. Step 5: Solve for x
    x = 14,071,312.64/5,249.69
  6. Step 6: Final answer
    x = 2,680.41

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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.