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Finding the Fourth Proportional to 3,813, 5,720.46 and 1,077

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Solution

The fourth proportional to 3,813, 5,720.46 and 1,077 is: 1,615.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813 : 5,720.46 = 1,077 : x
  2. Step 2: Convert to fraction form
    3,813/5,720.46 = 1,077/x
  3. Step 3: Cross multiply
    3,813x = 5,720.46 × 1,077
  4. Step 4: Simplify right side
    3,813x = 6,160,935.42
  5. Step 5: Solve for x
    x = 6,160,935.42/3,813
  6. Step 6: Final answer
    x = 1,615.77

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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.