Home / 3,917.48-5,406.03-2,124.86

Finding the Fourth Proportional to 3,917.48, 5,406.03 and 2,124.86

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Solution

The fourth proportional to 3,917.48, 5,406.03 and 2,124.86 is: 2,932.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.48 : 5,406.03 = 2,124.86 : x
  2. Step 2: Convert to fraction form
    3,917.48/5,406.03 = 2,124.86/x
  3. Step 3: Cross multiply
    3,917.48x = 5,406.03 × 2,124.86
  4. Step 4: Simplify right side
    3,917.48x = 11,487,029.88
  5. Step 5: Solve for x
    x = 11,487,029.88/3,917.48
  6. Step 6: Final answer
    x = 2,932.25

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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.