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Finding the Fourth Proportional to 8,930.97, 13,396.46 and 3,087.63

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Solution

The fourth proportional to 8,930.97, 13,396.46 and 3,087.63 is: 4,631.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.97 : 13,396.46 = 3,087.63 : x
  2. Step 2: Convert to fraction form
    8,930.97/13,396.46 = 3,087.63/x
  3. Step 3: Cross multiply
    8,930.97x = 13,396.46 × 3,087.63
  4. Step 4: Simplify right side
    8,930.97x = 41,363,296.35
  5. Step 5: Solve for x
    x = 41,363,296.35/8,930.97
  6. Step 6: Final answer
    x = 4,631.45

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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.