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Finding the Fourth Proportional to 9,143.56, 13,715.34 and 2,218

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Solution

The fourth proportional to 9,143.56, 13,715.34 and 2,218 is: 3,327.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.56 : 13,715.34 = 2,218 : x
  2. Step 2: Convert to fraction form
    9,143.56/13,715.34 = 2,218/x
  3. Step 3: Cross multiply
    9,143.56x = 13,715.34 × 2,218
  4. Step 4: Simplify right side
    9,143.56x = 30,420,624.12
  5. Step 5: Solve for x
    x = 30,420,624.12/9,143.56
  6. Step 6: Final answer
    x = 3,327.00

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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.