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Finding the Fourth Proportional to 8,792, 12,131.02 and 5,389.74

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Solution

The fourth proportional to 8,792, 12,131.02 and 5,389.74 is: 7,436.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,792 : 12,131.02 = 5,389.74 : x
  2. Step 2: Convert to fraction form
    8,792/12,131.02 = 5,389.74/x
  3. Step 3: Cross multiply
    8,792x = 12,131.02 × 5,389.74
  4. Step 4: Simplify right side
    8,792x = 65,383,043.73
  5. Step 5: Solve for x
    x = 65,383,043.73/8,792
  6. Step 6: Final answer
    x = 7,436.65

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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.