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Finding the Fourth Proportional to 8,943.39, 13,415.07 and 7,614.78

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Solution

The fourth proportional to 8,943.39, 13,415.07 and 7,614.78 is: 11,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.39 : 13,415.07 = 7,614.78 : x
  2. Step 2: Convert to fraction form
    8,943.39/13,415.07 = 7,614.78/x
  3. Step 3: Cross multiply
    8,943.39x = 13,415.07 × 7,614.78
  4. Step 4: Simplify right side
    8,943.39x = 102,152,806.73
  5. Step 5: Solve for x
    x = 102,152,806.73/8,943.39
  6. Step 6: Final answer
    x = 11,422.16

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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.