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Finding the Fourth Proportional to 9,478.97, 14,217.94 and 2,905.18

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Solution

The fourth proportional to 9,478.97, 14,217.94 and 2,905.18 is: 4,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,478.97 : 14,217.94 = 2,905.18 : x
  2. Step 2: Convert to fraction form
    9,478.97/14,217.94 = 2,905.18/x
  3. Step 3: Cross multiply
    9,478.97x = 14,217.94 × 2,905.18
  4. Step 4: Simplify right side
    9,478.97x = 41,305,674.93
  5. Step 5: Solve for x
    x = 41,305,674.93/9,478.97
  6. Step 6: Final answer
    x = 4,357.61

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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.