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Finding the Fourth Proportional to 8,922.56, 12,322.99 and 6,930.11

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Solution

The fourth proportional to 8,922.56, 12,322.99 and 6,930.11 is: 9,571.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,922.56 : 12,322.99 = 6,930.11 : x
  2. Step 2: Convert to fraction form
    8,922.56/12,322.99 = 6,930.11/x
  3. Step 3: Cross multiply
    8,922.56x = 12,322.99 × 6,930.11
  4. Step 4: Simplify right side
    8,922.56x = 85,399,607.40
  5. Step 5: Solve for x
    x = 85,399,607.40/8,922.56
  6. Step 6: Final answer
    x = 9,571.21

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1.5x scale

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.