Home / 3,938.00-5,434.35-2,145.41

Finding the Fourth Proportional to 3,938.00, 5,434.35 and 2,145.41

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Solution

The fourth proportional to 3,938.00, 5,434.35 and 2,145.41 is: 2,960.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.00 : 5,434.35 = 2,145.41 : x
  2. Step 2: Convert to fraction form
    3,938.00/5,434.35 = 2,145.41/x
  3. Step 3: Cross multiply
    3,938.00x = 5,434.35 × 2,145.41
  4. Step 4: Simplify right side
    3,938.00x = 11,658,881.66
  5. Step 5: Solve for x
    x = 11,658,881.66/3,938.00
  6. Step 6: Final answer
    x = 2,960.61

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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.