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Finding the Fourth Proportional to 8,002, 11,042.76 and 4,690

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Solution

The fourth proportional to 8,002, 11,042.76 and 4,690 is: 6,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,002 : 11,042.76 = 4,690 : x
  2. Step 2: Convert to fraction form
    8,002/11,042.76 = 4,690/x
  3. Step 3: Cross multiply
    8,002x = 11,042.76 × 4,690
  4. Step 4: Simplify right side
    8,002x = 51,790,544.40
  5. Step 5: Solve for x
    x = 51,790,544.40/8,002
  6. Step 6: Final answer
    x = 6,472.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.