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Finding the Fourth Proportional to 8,623.44, 12,922.80 and 4,918

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Solution

The fourth proportional to 8,623.44, 12,922.80 and 4,918 is: 7,369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.44 : 12,922.80 = 4,918 : x
  2. Step 2: Convert to fraction form
    8,623.44/12,922.80 = 4,918/x
  3. Step 3: Cross multiply
    8,623.44x = 12,922.80 × 4,918
  4. Step 4: Simplify right side
    8,623.44x = 63,554,330.40
  5. Step 5: Solve for x
    x = 63,554,330.40/8,623.44
  6. Step 6: Final answer
    x = 7,369.95

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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.