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Finding the Fourth Proportional to 6,636.78, 9,956.52 and 1,956.90

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Solution

The fourth proportional to 6,636.78, 9,956.52 and 1,956.90 is: 2,935.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,636.78 : 9,956.52 = 1,956.90 : x
  2. Step 2: Convert to fraction form
    6,636.78/9,956.52 = 1,956.90/x
  3. Step 3: Cross multiply
    6,636.78x = 9,956.52 × 1,956.90
  4. Step 4: Simplify right side
    6,636.78x = 19,483,913.99
  5. Step 5: Solve for x
    x = 19,483,913.99/6,636.78
  6. Step 6: Final answer
    x = 2,935.75

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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.