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Finding the Fourth Proportional to 3,846.61, 5,769.30 and 1,072.99

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Solution

The fourth proportional to 3,846.61, 5,769.30 and 1,072.99 is: 1,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,846.61 : 5,769.30 = 1,072.99 : x
  2. Step 2: Convert to fraction form
    3,846.61/5,769.30 = 1,072.99/x
  3. Step 3: Cross multiply
    3,846.61x = 5,769.30 × 1,072.99
  4. Step 4: Simplify right side
    3,846.61x = 6,190,401.21
  5. Step 5: Solve for x
    x = 6,190,401.21/3,846.61
  6. Step 6: Final answer
    x = 1,609.31

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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.