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Finding the Fourth Proportional to 6,166.60, 9,249.90 and 5,129.80

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Solution

The fourth proportional to 6,166.60, 9,249.90 and 5,129.80 is: 7,694.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,166.60 : 9,249.90 = 5,129.80 : x
  2. Step 2: Convert to fraction form
    6,166.60/9,249.90 = 5,129.80/x
  3. Step 3: Cross multiply
    6,166.60x = 9,249.90 × 5,129.80
  4. Step 4: Simplify right side
    6,166.60x = 47,450,137.02
  5. Step 5: Solve for x
    x = 47,450,137.02/6,166.60
  6. Step 6: Final answer
    x = 7,694.70

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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.