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Finding the Fourth Proportional to 3,193.49, 4,790.11 and 853.49

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Solution

The fourth proportional to 3,193.49, 4,790.11 and 853.49 is: 1,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,193.49 : 4,790.11 = 853.49 : x
  2. Step 2: Convert to fraction form
    3,193.49/4,790.11 = 853.49/x
  3. Step 3: Cross multiply
    3,193.49x = 4,790.11 × 853.49
  4. Step 4: Simplify right side
    3,193.49x = 4,088,310.98
  5. Step 5: Solve for x
    x = 4,088,310.98/3,193.49
  6. Step 6: Final answer
    x = 1,280.20

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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.