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Finding the Fourth Proportional to 6,910.45, 10,308.74 and 6,387.73

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Solution

The fourth proportional to 6,910.45, 10,308.74 and 6,387.73 is: 9,528.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,910.45 : 10,308.74 = 6,387.73 : x
  2. Step 2: Convert to fraction form
    6,910.45/10,308.74 = 6,387.73/x
  3. Step 3: Cross multiply
    6,910.45x = 10,308.74 × 6,387.73
  4. Step 4: Simplify right side
    6,910.45x = 65,849,390.05
  5. Step 5: Solve for x
    x = 65,849,390.05/6,910.45
  6. Step 6: Final answer
    x = 9,528.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.