Home / 3,908.19-5,395.81-3,487.81

Finding the Fourth Proportional to 3,908.19, 5,395.81 and 3,487.81

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Solution

The fourth proportional to 3,908.19, 5,395.81 and 3,487.81 is: 4,815.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.19 : 5,395.81 = 3,487.81 : x
  2. Step 2: Convert to fraction form
    3,908.19/5,395.81 = 3,487.81/x
  3. Step 3: Cross multiply
    3,908.19x = 5,395.81 × 3,487.81
  4. Step 4: Simplify right side
    3,908.19x = 18,819,560.08
  5. Step 5: Solve for x
    x = 18,819,560.08/3,908.19
  6. Step 6: Final answer
    x = 4,815.42

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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.