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Finding the Fourth Proportional to 3,652.72, 5,469.30 and 1,917.68

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Solution

The fourth proportional to 3,652.72, 5,469.30 and 1,917.68 is: 2,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,652.72 : 5,469.30 = 1,917.68 : x
  2. Step 2: Convert to fraction form
    3,652.72/5,469.30 = 1,917.68/x
  3. Step 3: Cross multiply
    3,652.72x = 5,469.30 × 1,917.68
  4. Step 4: Simplify right side
    3,652.72x = 10,488,367.22
  5. Step 5: Solve for x
    x = 10,488,367.22/3,652.72
  6. Step 6: Final answer
    x = 2,871.39

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1.5x scale

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.