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Finding the Fourth Proportional to 7,792.22, 11,729.97 and 6,988.50

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Solution

The fourth proportional to 7,792.22, 11,729.97 and 6,988.50 is: 10,520.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,792.22 : 11,729.97 = 6,988.50 : x
  2. Step 2: Convert to fraction form
    7,792.22/11,729.97 = 6,988.50/x
  3. Step 3: Cross multiply
    7,792.22x = 11,729.97 × 6,988.50
  4. Step 4: Simplify right side
    7,792.22x = 81,974,895.35
  5. Step 5: Solve for x
    x = 81,974,895.35/7,792.22
  6. Step 6: Final answer
    x = 10,520.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.