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Finding the Fourth Proportional to 7,669.70, 11,487.69 and 6,338.36

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Solution

The fourth proportional to 7,669.70, 11,487.69 and 6,338.36 is: 9,493.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,669.70 : 11,487.69 = 6,338.36 : x
  2. Step 2: Convert to fraction form
    7,669.70/11,487.69 = 6,338.36/x
  3. Step 3: Cross multiply
    7,669.70x = 11,487.69 × 6,338.36
  4. Step 4: Simplify right side
    7,669.70x = 72,813,114.79
  5. Step 5: Solve for x
    x = 72,813,114.79/7,669.70
  6. Step 6: Final answer
    x = 9,493.61

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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.