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Finding the Fourth Proportional to 5,689.91, 8,529.00 and 2,178.96

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Solution

The fourth proportional to 5,689.91, 8,529.00 and 2,178.96 is: 3,266.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.91 : 8,529.00 = 2,178.96 : x
  2. Step 2: Convert to fraction form
    5,689.91/8,529.00 = 2,178.96/x
  3. Step 3: Cross multiply
    5,689.91x = 8,529.00 × 2,178.96
  4. Step 4: Simplify right side
    5,689.91x = 18,584,296.30
  5. Step 5: Solve for x
    x = 18,584,296.30/5,689.91
  6. Step 6: Final answer
    x = 3,266.19

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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.