Home / 3,904.38-5,388.05-2,135.98

Finding the Fourth Proportional to 3,904.38, 5,388.05 and 2,135.98

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Solution

The fourth proportional to 3,904.38, 5,388.05 and 2,135.98 is: 2,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.38 : 5,388.05 = 2,135.98 : x
  2. Step 2: Convert to fraction form
    3,904.38/5,388.05 = 2,135.98/x
  3. Step 3: Cross multiply
    3,904.38x = 5,388.05 × 2,135.98
  4. Step 4: Simplify right side
    3,904.38x = 11,508,742.89
  5. Step 5: Solve for x
    x = 11,508,742.89/3,904.38
  6. Step 6: Final answer
    x = 2,947.65

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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.