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Finding the Fourth Proportional to 7,695, 11,550.80 and 3,807.61

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Solution

The fourth proportional to 7,695, 11,550.80 and 3,807.61 is: 5,715.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,695 : 11,550.80 = 3,807.61 : x
  2. Step 2: Convert to fraction form
    7,695/11,550.80 = 3,807.61/x
  3. Step 3: Cross multiply
    7,695x = 11,550.80 × 3,807.61
  4. Step 4: Simplify right side
    7,695x = 43,980,922.23
  5. Step 5: Solve for x
    x = 43,980,922.23/7,695
  6. Step 6: Final answer
    x = 5,715.52

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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.