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Finding the Fourth Proportional to 3,774.06, 5,661.90 and 1,434.78

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Solution

The fourth proportional to 3,774.06, 5,661.90 and 1,434.78 is: 2,152.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774.06 : 5,661.90 = 1,434.78 : x
  2. Step 2: Convert to fraction form
    3,774.06/5,661.90 = 1,434.78/x
  3. Step 3: Cross multiply
    3,774.06x = 5,661.90 × 1,434.78
  4. Step 4: Simplify right side
    3,774.06x = 8,123,580.88
  5. Step 5: Solve for x
    x = 8,123,580.88/3,774.06
  6. Step 6: Final answer
    x = 2,152.48

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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.