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Finding the Fourth Proportional to 8,668.85, 11,963.00 and 4,689.95

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Solution

The fourth proportional to 8,668.85, 11,963.00 and 4,689.95 is: 6,472.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.85 : 11,963.00 = 4,689.95 : x
  2. Step 2: Convert to fraction form
    8,668.85/11,963.00 = 4,689.95/x
  3. Step 3: Cross multiply
    8,668.85x = 11,963.00 × 4,689.95
  4. Step 4: Simplify right side
    8,668.85x = 56,105,848.40
  5. Step 5: Solve for x
    x = 56,105,848.40/8,668.85
  6. Step 6: Final answer
    x = 6,472.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.