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Finding the Fourth Proportional to 3,868, 5,801.92 and 946.28

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Solution

The fourth proportional to 3,868, 5,801.92 and 946.28 is: 1,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868 : 5,801.92 = 946.28 : x
  2. Step 2: Convert to fraction form
    3,868/5,801.92 = 946.28/x
  3. Step 3: Cross multiply
    3,868x = 5,801.92 × 946.28
  4. Step 4: Simplify right side
    3,868x = 5,490,240.86
  5. Step 5: Solve for x
    x = 5,490,240.86/3,868
  6. Step 6: Final answer
    x = 1,419.40

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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.