Home / 3,917.40-5,406.06-2,148.97

Finding the Fourth Proportional to 3,917.40, 5,406.06 and 2,148.97

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Solution

The fourth proportional to 3,917.40, 5,406.06 and 2,148.97 is: 2,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.40 : 5,406.06 = 2,148.97 : x
  2. Step 2: Convert to fraction form
    3,917.40/5,406.06 = 2,148.97/x
  3. Step 3: Cross multiply
    3,917.40x = 5,406.06 × 2,148.97
  4. Step 4: Simplify right side
    3,917.40x = 11,617,450.01
  5. Step 5: Solve for x
    x = 11,617,450.01/3,917.40
  6. Step 6: Final answer
    x = 2,965.60

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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.