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Finding the Fourth Proportional to 7,651.80, 11,477.70 and 5,455.69

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Solution

The fourth proportional to 7,651.80, 11,477.70 and 5,455.69 is: 8,183.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,651.80 : 11,477.70 = 5,455.69 : x
  2. Step 2: Convert to fraction form
    7,651.80/11,477.70 = 5,455.69/x
  3. Step 3: Cross multiply
    7,651.80x = 11,477.70 × 5,455.69
  4. Step 4: Simplify right side
    7,651.80x = 62,618,744.42
  5. Step 5: Solve for x
    x = 62,618,744.42/7,651.80
  6. Step 6: Final answer
    x = 8,183.53

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Similar ratio
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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.