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Finding the Fourth Proportional to 7,659.77, 11,479.86 and 6,668.54

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Solution

The fourth proportional to 7,659.77, 11,479.86 and 6,668.54 is: 9,994.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.77 : 11,479.86 = 6,668.54 : x
  2. Step 2: Convert to fraction form
    7,659.77/11,479.86 = 6,668.54/x
  3. Step 3: Cross multiply
    7,659.77x = 11,479.86 × 6,668.54
  4. Step 4: Simplify right side
    7,659.77x = 76,553,905.60
  5. Step 5: Solve for x
    x = 76,553,905.60/7,659.77
  6. Step 6: Final answer
    x = 9,994.28

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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.