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Finding the Fourth Proportional to 8,799.40, 13,198.86 and 2,643.40

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Solution

The fourth proportional to 8,799.40, 13,198.86 and 2,643.40 is: 3,965.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,799.40 : 13,198.86 = 2,643.40 : x
  2. Step 2: Convert to fraction form
    8,799.40/13,198.86 = 2,643.40/x
  3. Step 3: Cross multiply
    8,799.40x = 13,198.86 × 2,643.40
  4. Step 4: Simplify right side
    8,799.40x = 34,889,866.52
  5. Step 5: Solve for x
    x = 34,889,866.52/8,799.40
  6. Step 6: Final answer
    x = 3,965.03

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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.