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Finding the Fourth Proportional to 4,789.62, 7,181.93 and 2,154.84

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Solution

The fourth proportional to 4,789.62, 7,181.93 and 2,154.84 is: 3,231.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.62 : 7,181.93 = 2,154.84 : x
  2. Step 2: Convert to fraction form
    4,789.62/7,181.93 = 2,154.84/x
  3. Step 3: Cross multiply
    4,789.62x = 7,181.93 × 2,154.84
  4. Step 4: Simplify right side
    4,789.62x = 15,475,910.04
  5. Step 5: Solve for x
    x = 15,475,910.04/4,789.62
  6. Step 6: Final answer
    x = 3,231.14

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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.