Home / 3,917.57-5,405.94-2,345.36

Finding the Fourth Proportional to 3,917.57, 5,405.94 and 2,345.36

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Solution

The fourth proportional to 3,917.57, 5,405.94 and 2,345.36 is: 3,236.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.57 : 5,405.94 = 2,345.36 : x
  2. Step 2: Convert to fraction form
    3,917.57/5,405.94 = 2,345.36/x
  3. Step 3: Cross multiply
    3,917.57x = 5,405.94 × 2,345.36
  4. Step 4: Simplify right side
    3,917.57x = 12,678,848.41
  5. Step 5: Solve for x
    x = 12,678,848.41/3,917.57
  6. Step 6: Final answer
    x = 3,236.41

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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.