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Finding the Fourth Proportional to 3,813.64, 5,717.18 and 1,506.76

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Solution

The fourth proportional to 3,813.64, 5,717.18 and 1,506.76 is: 2,258.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.64 : 5,717.18 = 1,506.76 : x
  2. Step 2: Convert to fraction form
    3,813.64/5,717.18 = 1,506.76/x
  3. Step 3: Cross multiply
    3,813.64x = 5,717.18 × 1,506.76
  4. Step 4: Simplify right side
    3,813.64x = 8,614,418.14
  5. Step 5: Solve for x
    x = 8,614,418.14/3,813.64
  6. Step 6: Final answer
    x = 2,258.84

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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.