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Finding the Fourth Proportional to 6,604.32, 9,906.54 and 2,855.40

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Solution

The fourth proportional to 6,604.32, 9,906.54 and 2,855.40 is: 4,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,604.32 : 9,906.54 = 2,855.40 : x
  2. Step 2: Convert to fraction form
    6,604.32/9,906.54 = 2,855.40/x
  3. Step 3: Cross multiply
    6,604.32x = 9,906.54 × 2,855.40
  4. Step 4: Simplify right side
    6,604.32x = 28,287,134.32
  5. Step 5: Solve for x
    x = 28,287,134.32/6,604.32
  6. Step 6: Final answer
    x = 4,283.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.