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Finding the Fourth Proportional to 9,308.96, 12,836.80 and 6,479.58

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Solution

The fourth proportional to 9,308.96, 12,836.80 and 6,479.58 is: 8,935.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,308.96 : 12,836.80 = 6,479.58 : x
  2. Step 2: Convert to fraction form
    9,308.96/12,836.80 = 6,479.58/x
  3. Step 3: Cross multiply
    9,308.96x = 12,836.80 × 6,479.58
  4. Step 4: Simplify right side
    9,308.96x = 83,177,072.54
  5. Step 5: Solve for x
    x = 83,177,072.54/9,308.96
  6. Step 6: Final answer
    x = 8,935.16

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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.