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Finding the Fourth Proportional to 4,379.77, 6,568.59 and 2,187.99

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Solution

The fourth proportional to 4,379.77, 6,568.59 and 2,187.99 is: 3,281.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,379.77 : 6,568.59 = 2,187.99 : x
  2. Step 2: Convert to fraction form
    4,379.77/6,568.59 = 2,187.99/x
  3. Step 3: Cross multiply
    4,379.77x = 6,568.59 × 2,187.99
  4. Step 4: Simplify right side
    4,379.77x = 14,371,998.96
  5. Step 5: Solve for x
    x = 14,371,998.96/4,379.77
  6. Step 6: Final answer
    x = 3,281.45

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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.