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Finding the Fourth Proportional to 2,908.65, 4,016.01 and 1,789.95

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Solution

The fourth proportional to 2,908.65, 4,016.01 and 1,789.95 is: 2,471.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.65 : 4,016.01 = 1,789.95 : x
  2. Step 2: Convert to fraction form
    2,908.65/4,016.01 = 1,789.95/x
  3. Step 3: Cross multiply
    2,908.65x = 4,016.01 × 1,789.95
  4. Step 4: Simplify right side
    2,908.65x = 7,188,457.10
  5. Step 5: Solve for x
    x = 7,188,457.10/2,908.65
  6. Step 6: Final answer
    x = 2,471.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.