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Finding the Fourth Proportional to 8,663.70, 12,973.41 and 4,763.82

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Solution

The fourth proportional to 8,663.70, 12,973.41 and 4,763.82 is: 7,133.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.70 : 12,973.41 = 4,763.82 : x
  2. Step 2: Convert to fraction form
    8,663.70/12,973.41 = 4,763.82/x
  3. Step 3: Cross multiply
    8,663.70x = 12,973.41 × 4,763.82
  4. Step 4: Simplify right side
    8,663.70x = 61,802,990.03
  5. Step 5: Solve for x
    x = 61,802,990.03/8,663.70
  6. Step 6: Final answer
    x = 7,133.56

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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.