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Finding the Fourth Proportional to 8,891.78, 13,338.34 and 2,651.30

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Solution

The fourth proportional to 8,891.78, 13,338.34 and 2,651.30 is: 3,977.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.78 : 13,338.34 = 2,651.30 : x
  2. Step 2: Convert to fraction form
    8,891.78/13,338.34 = 2,651.30/x
  3. Step 3: Cross multiply
    8,891.78x = 13,338.34 × 2,651.30
  4. Step 4: Simplify right side
    8,891.78x = 35,363,917.54
  5. Step 5: Solve for x
    x = 35,363,917.54/8,891.78
  6. Step 6: Final answer
    x = 3,977.15

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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.