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Finding the Fourth Proportional to 8,309.88, 12,472.00 and 4,363.91

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Solution

The fourth proportional to 8,309.88, 12,472.00 and 4,363.91 is: 6,549.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.88 : 12,472.00 = 4,363.91 : x
  2. Step 2: Convert to fraction form
    8,309.88/12,472.00 = 4,363.91/x
  3. Step 3: Cross multiply
    8,309.88x = 12,472.00 × 4,363.91
  4. Step 4: Simplify right side
    8,309.88x = 54,426,665.25
  5. Step 5: Solve for x
    x = 54,426,665.25/8,309.88
  6. Step 6: Final answer
    x = 6,549.64

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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.