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Finding the Fourth Proportional to 7,668.45, 10,575.93 and 6,479.28

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Solution

The fourth proportional to 7,668.45, 10,575.93 and 6,479.28 is: 8,935.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,668.45 : 10,575.93 = 6,479.28 : x
  2. Step 2: Convert to fraction form
    7,668.45/10,575.93 = 6,479.28/x
  3. Step 3: Cross multiply
    7,668.45x = 10,575.93 × 6,479.28
  4. Step 4: Simplify right side
    7,668.45x = 68,524,411.73
  5. Step 5: Solve for x
    x = 68,524,411.73/7,668.45
  6. Step 6: Final answer
    x = 8,935.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.