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Finding the Fourth Proportional to 4,691.57, 7,027.79 and 2,218.89

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Solution

The fourth proportional to 4,691.57, 7,027.79 and 2,218.89 is: 3,323.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,691.57 : 7,027.79 = 2,218.89 : x
  2. Step 2: Convert to fraction form
    4,691.57/7,027.79 = 2,218.89/x
  3. Step 3: Cross multiply
    4,691.57x = 7,027.79 × 2,218.89
  4. Step 4: Simplify right side
    4,691.57x = 15,593,914.45
  5. Step 5: Solve for x
    x = 15,593,914.45/4,691.57
  6. Step 6: Final answer
    x = 3,323.82

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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.