Home / 3,917.16-5,405.82-2,148.81

Finding the Fourth Proportional to 3,917.16, 5,405.82 and 2,148.81

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Solution

The fourth proportional to 3,917.16, 5,405.82 and 2,148.81 is: 2,965.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.16 : 5,405.82 = 2,148.81 : x
  2. Step 2: Convert to fraction form
    3,917.16/5,405.82 = 2,148.81/x
  3. Step 3: Cross multiply
    3,917.16x = 5,405.82 × 2,148.81
  4. Step 4: Simplify right side
    3,917.16x = 11,616,080.07
  5. Step 5: Solve for x
    x = 11,616,080.07/3,917.16
  6. Step 6: Final answer
    x = 2,965.43

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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.