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Finding the Fourth Proportional to 3,913.63, 5,863.61 and 3,259.71

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Solution

The fourth proportional to 3,913.63, 5,863.61 and 3,259.71 is: 4,883.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.63 : 5,863.61 = 3,259.71 : x
  2. Step 2: Convert to fraction form
    3,913.63/5,863.61 = 3,259.71/x
  3. Step 3: Cross multiply
    3,913.63x = 5,863.61 × 3,259.71
  4. Step 4: Simplify right side
    3,913.63x = 19,113,676.30
  5. Step 5: Solve for x
    x = 19,113,676.30/3,913.63
  6. Step 6: Final answer
    x = 4,883.87

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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.