Home / 3,921.05-5,885.58-2,071.82

Finding the Fourth Proportional to 3,921.05, 5,885.58 and 2,071.82

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Solution

The fourth proportional to 3,921.05, 5,885.58 and 2,071.82 is: 3,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.05 : 5,885.58 = 2,071.82 : x
  2. Step 2: Convert to fraction form
    3,921.05/5,885.58 = 2,071.82/x
  3. Step 3: Cross multiply
    3,921.05x = 5,885.58 × 2,071.82
  4. Step 4: Simplify right side
    3,921.05x = 12,193,862.36
  5. Step 5: Solve for x
    x = 12,193,862.36/3,921.05
  6. Step 6: Final answer
    x = 3,109.85

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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.