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Finding the Fourth Proportional to 3,774.57, 5,661.86 and 1,309.39

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Solution

The fourth proportional to 3,774.57, 5,661.86 and 1,309.39 is: 1,964.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774.57 : 5,661.86 = 1,309.39 : x
  2. Step 2: Convert to fraction form
    3,774.57/5,661.86 = 1,309.39/x
  3. Step 3: Cross multiply
    3,774.57x = 5,661.86 × 1,309.39
  4. Step 4: Simplify right side
    3,774.57x = 7,413,582.87
  5. Step 5: Solve for x
    x = 7,413,582.87/3,774.57
  6. Step 6: Final answer
    x = 1,964.09

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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.