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Finding the Fourth Proportional to 3,765.16, 5,651.16 and 1,917.56

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Solution

The fourth proportional to 3,765.16, 5,651.16 and 1,917.56 is: 2,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.16 : 5,651.16 = 1,917.56 : x
  2. Step 2: Convert to fraction form
    3,765.16/5,651.16 = 1,917.56/x
  3. Step 3: Cross multiply
    3,765.16x = 5,651.16 × 1,917.56
  4. Step 4: Simplify right side
    3,765.16x = 10,836,438.37
  5. Step 5: Solve for x
    x = 10,836,438.37/3,765.16
  6. Step 6: Final answer
    x = 2,878.08

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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.