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Finding the Fourth Proportional to 8,889.52, 13,325.76 and 3,959.80

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Solution

The fourth proportional to 8,889.52, 13,325.76 and 3,959.80 is: 5,935.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.52 : 13,325.76 = 3,959.80 : x
  2. Step 2: Convert to fraction form
    8,889.52/13,325.76 = 3,959.80/x
  3. Step 3: Cross multiply
    8,889.52x = 13,325.76 × 3,959.80
  4. Step 4: Simplify right side
    8,889.52x = 52,767,344.45
  5. Step 5: Solve for x
    x = 52,767,344.45/8,889.52
  6. Step 6: Final answer
    x = 5,935.90

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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.