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Finding the Fourth Proportional to 2,651.21, 3,976.83 and 703.41

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Solution

The fourth proportional to 2,651.21, 3,976.83 and 703.41 is: 1,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.21 : 3,976.83 = 703.41 : x
  2. Step 2: Convert to fraction form
    2,651.21/3,976.83 = 703.41/x
  3. Step 3: Cross multiply
    2,651.21x = 3,976.83 × 703.41
  4. Step 4: Simplify right side
    2,651.21x = 2,797,341.99
  5. Step 5: Solve for x
    x = 2,797,341.99/2,651.21
  6. Step 6: Final answer
    x = 1,055.12

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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.