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Finding the Fourth Proportional to 8,912.71, 13,369.78 and 2,338.88

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Solution

The fourth proportional to 8,912.71, 13,369.78 and 2,338.88 is: 3,508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.71 : 13,369.78 = 2,338.88 : x
  2. Step 2: Convert to fraction form
    8,912.71/13,369.78 = 2,338.88/x
  3. Step 3: Cross multiply
    8,912.71x = 13,369.78 × 2,338.88
  4. Step 4: Simplify right side
    8,912.71x = 31,270,253.70
  5. Step 5: Solve for x
    x = 31,270,253.70/8,912.71
  6. Step 6: Final answer
    x = 3,508.50

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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.