Home / 3,904.72-5,857.09-1,438.47

Finding the Fourth Proportional to 3,904.72, 5,857.09 and 1,438.47

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Solution

The fourth proportional to 3,904.72, 5,857.09 and 1,438.47 is: 2,157.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.72 : 5,857.09 = 1,438.47 : x
  2. Step 2: Convert to fraction form
    3,904.72/5,857.09 = 1,438.47/x
  3. Step 3: Cross multiply
    3,904.72x = 5,857.09 × 1,438.47
  4. Step 4: Simplify right side
    3,904.72x = 8,425,244.66
  5. Step 5: Solve for x
    x = 8,425,244.66/3,904.72
  6. Step 6: Final answer
    x = 2,157.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.