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Finding the Fourth Proportional to 6,636.52, 9,954.78 and 5,479.84

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Solution

The fourth proportional to 6,636.52, 9,954.78 and 5,479.84 is: 8,219.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,636.52 : 9,954.78 = 5,479.84 : x
  2. Step 2: Convert to fraction form
    6,636.52/9,954.78 = 5,479.84/x
  3. Step 3: Cross multiply
    6,636.52x = 9,954.78 × 5,479.84
  4. Step 4: Simplify right side
    6,636.52x = 54,550,601.64
  5. Step 5: Solve for x
    x = 54,550,601.64/6,636.52
  6. Step 6: Final answer
    x = 8,219.76

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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.