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Finding the Fourth Proportional to 8,891.40, 13,339.02 and 2,651.46

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Solution

The fourth proportional to 8,891.40, 13,339.02 and 2,651.46 is: 3,977.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.40 : 13,339.02 = 2,651.46 : x
  2. Step 2: Convert to fraction form
    8,891.40/13,339.02 = 2,651.46/x
  3. Step 3: Cross multiply
    8,891.40x = 13,339.02 × 2,651.46
  4. Step 4: Simplify right side
    8,891.40x = 35,367,877.97
  5. Step 5: Solve for x
    x = 35,367,877.97/8,891.40
  6. Step 6: Final answer
    x = 3,977.76

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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.