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Finding the Fourth Proportional to 3,169.29, 4,753.67 and 978.03

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Solution

The fourth proportional to 3,169.29, 4,753.67 and 978.03 is: 1,466.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.29 : 4,753.67 = 978.03 : x
  2. Step 2: Convert to fraction form
    3,169.29/4,753.67 = 978.03/x
  3. Step 3: Cross multiply
    3,169.29x = 4,753.67 × 978.03
  4. Step 4: Simplify right side
    3,169.29x = 4,649,226.98
  5. Step 5: Solve for x
    x = 4,649,226.98/3,169.29
  6. Step 6: Final answer
    x = 1,466.96

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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.