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Finding the Fourth Proportional to 3,950.48, 5,450.64 and 2,378

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Solution

The fourth proportional to 3,950.48, 5,450.64 and 2,378 is: 3,281.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.48 : 5,450.64 = 2,378 : x
  2. Step 2: Convert to fraction form
    3,950.48/5,450.64 = 2,378/x
  3. Step 3: Cross multiply
    3,950.48x = 5,450.64 × 2,378
  4. Step 4: Simplify right side
    3,950.48x = 12,961,621.92
  5. Step 5: Solve for x
    x = 12,961,621.92/3,950.48
  6. Step 6: Final answer
    x = 3,281.02

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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.