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Finding the Fourth Proportional to 3,379, 4,663.52 and 3,231.40

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Solution

The fourth proportional to 3,379, 4,663.52 and 3,231.40 is: 4,459.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379 : 4,663.52 = 3,231.40 : x
  2. Step 2: Convert to fraction form
    3,379/4,663.52 = 3,231.40/x
  3. Step 3: Cross multiply
    3,379x = 4,663.52 × 3,231.40
  4. Step 4: Simplify right side
    3,379x = 15,069,698.53
  5. Step 5: Solve for x
    x = 15,069,698.53/3,379
  6. Step 6: Final answer
    x = 4,459.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.