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Finding the Fourth Proportional to 5,679.32, 8,508.04 and 4,640.49

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Solution

The fourth proportional to 5,679.32, 8,508.04 and 4,640.49 is: 6,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.32 : 8,508.04 = 4,640.49 : x
  2. Step 2: Convert to fraction form
    5,679.32/8,508.04 = 4,640.49/x
  3. Step 3: Cross multiply
    5,679.32x = 8,508.04 × 4,640.49
  4. Step 4: Simplify right side
    5,679.32x = 39,481,462.94
  5. Step 5: Solve for x
    x = 39,481,462.94/5,679.32
  6. Step 6: Final answer
    x = 6,951.80

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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.