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Finding the Fourth Proportional to 8,840.78, 12,202.24 and 6,922.78

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Solution

The fourth proportional to 8,840.78, 12,202.24 and 6,922.78 is: 9,554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,840.78 : 12,202.24 = 6,922.78 : x
  2. Step 2: Convert to fraction form
    8,840.78/12,202.24 = 6,922.78/x
  3. Step 3: Cross multiply
    8,840.78x = 12,202.24 × 6,922.78
  4. Step 4: Simplify right side
    8,840.78x = 84,473,423.03
  5. Step 5: Solve for x
    x = 84,473,423.03/8,840.78
  6. Step 6: Final answer
    x = 9,554.97

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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.