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Finding the Fourth Proportional to 3,765.79, 5,648.64 and 1,816.62

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Solution

The fourth proportional to 3,765.79, 5,648.64 and 1,816.62 is: 2,724.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.79 : 5,648.64 = 1,816.62 : x
  2. Step 2: Convert to fraction form
    3,765.79/5,648.64 = 1,816.62/x
  3. Step 3: Cross multiply
    3,765.79x = 5,648.64 × 1,816.62
  4. Step 4: Simplify right side
    3,765.79x = 10,261,432.40
  5. Step 5: Solve for x
    x = 10,261,432.40/3,765.79
  6. Step 6: Final answer
    x = 2,724.91

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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.