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Finding the Fourth Proportional to 9,381.88, 14,072.99 and 3,140.73

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Solution

The fourth proportional to 9,381.88, 14,072.99 and 3,140.73 is: 4,711.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,381.88 : 14,072.99 = 3,140.73 : x
  2. Step 2: Convert to fraction form
    9,381.88/14,072.99 = 3,140.73/x
  3. Step 3: Cross multiply
    9,381.88x = 14,072.99 × 3,140.73
  4. Step 4: Simplify right side
    9,381.88x = 44,199,469.73
  5. Step 5: Solve for x
    x = 44,199,469.73/9,381.88
  6. Step 6: Final answer
    x = 4,711.15

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1.5x scale

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.