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Finding the Fourth Proportional to 2,379.56, 3,568.05 and 1,687.59

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Solution

The fourth proportional to 2,379.56, 3,568.05 and 1,687.59 is: 2,530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.56 : 3,568.05 = 1,687.59 : x
  2. Step 2: Convert to fraction form
    2,379.56/3,568.05 = 1,687.59/x
  3. Step 3: Cross multiply
    2,379.56x = 3,568.05 × 1,687.59
  4. Step 4: Simplify right side
    2,379.56x = 6,021,405.50
  5. Step 5: Solve for x
    x = 6,021,405.50/2,379.56
  6. Step 6: Final answer
    x = 2,530.48

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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.