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Finding the Fourth Proportional to 7,144.80, 10,715.58 and 3,193.98

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Solution

The fourth proportional to 7,144.80, 10,715.58 and 3,193.98 is: 4,790.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.80 : 10,715.58 = 3,193.98 : x
  2. Step 2: Convert to fraction form
    7,144.80/10,715.58 = 3,193.98/x
  3. Step 3: Cross multiply
    7,144.80x = 10,715.58 × 3,193.98
  4. Step 4: Simplify right side
    7,144.80x = 34,225,348.21
  5. Step 5: Solve for x
    x = 34,225,348.21/7,144.80
  6. Step 6: Final answer
    x = 4,790.25

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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.