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Finding the Fourth Proportional to 8,754.78, 13,133.02 and 2,911.80

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Solution

The fourth proportional to 8,754.78, 13,133.02 and 2,911.80 is: 4,367.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,754.78 : 13,133.02 = 2,911.80 : x
  2. Step 2: Convert to fraction form
    8,754.78/13,133.02 = 2,911.80/x
  3. Step 3: Cross multiply
    8,754.78x = 13,133.02 × 2,911.80
  4. Step 4: Simplify right side
    8,754.78x = 38,240,727.64
  5. Step 5: Solve for x
    x = 38,240,727.64/8,754.78
  6. Step 6: Final answer
    x = 4,367.98

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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.