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Finding the Fourth Proportional to 2,998.65, 4,489.91 and 1,956.07

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Solution

The fourth proportional to 2,998.65, 4,489.91 and 1,956.07 is: 2,928.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.65 : 4,489.91 = 1,956.07 : x
  2. Step 2: Convert to fraction form
    2,998.65/4,489.91 = 1,956.07/x
  3. Step 3: Cross multiply
    2,998.65x = 4,489.91 × 1,956.07
  4. Step 4: Simplify right side
    2,998.65x = 8,782,581.42
  5. Step 5: Solve for x
    x = 8,782,581.42/2,998.65
  6. Step 6: Final answer
    x = 2,928.84

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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.