Home / 3,917.52-5,405.25-2,239.02

Finding the Fourth Proportional to 3,917.52, 5,405.25 and 2,239.02

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Solution

The fourth proportional to 3,917.52, 5,405.25 and 2,239.02 is: 3,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.52 : 5,405.25 = 2,239.02 : x
  2. Step 2: Convert to fraction form
    3,917.52/5,405.25 = 2,239.02/x
  3. Step 3: Cross multiply
    3,917.52x = 5,405.25 × 2,239.02
  4. Step 4: Simplify right side
    3,917.52x = 12,102,462.86
  5. Step 5: Solve for x
    x = 12,102,462.86/3,917.52
  6. Step 6: Final answer
    x = 3,089.32

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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.