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Finding the Fourth Proportional to 3,448.86, 5,174.50 and 1,257.81

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Solution

The fourth proportional to 3,448.86, 5,174.50 and 1,257.81 is: 1,887.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,448.86 : 5,174.50 = 1,257.81 : x
  2. Step 2: Convert to fraction form
    3,448.86/5,174.50 = 1,257.81/x
  3. Step 3: Cross multiply
    3,448.86x = 5,174.50 × 1,257.81
  4. Step 4: Simplify right side
    3,448.86x = 6,508,537.85
  5. Step 5: Solve for x
    x = 6,508,537.85/3,448.86
  6. Step 6: Final answer
    x = 1,887.16

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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.