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Finding the Fourth Proportional to 7,338.78, 11,008.11 and 2,956.17

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Solution

The fourth proportional to 7,338.78, 11,008.11 and 2,956.17 is: 4,434.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.78 : 11,008.11 = 2,956.17 : x
  2. Step 2: Convert to fraction form
    7,338.78/11,008.11 = 2,956.17/x
  3. Step 3: Cross multiply
    7,338.78x = 11,008.11 × 2,956.17
  4. Step 4: Simplify right side
    7,338.78x = 32,541,844.54
  5. Step 5: Solve for x
    x = 32,541,844.54/7,338.78
  6. Step 6: Final answer
    x = 4,434.23

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1.5x scale

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.