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Finding the Fourth Proportional to 4,811.88, 6,640.49 and 2,658.41

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Solution

The fourth proportional to 4,811.88, 6,640.49 and 2,658.41 is: 3,668.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.88 : 6,640.49 = 2,658.41 : x
  2. Step 2: Convert to fraction form
    4,811.88/6,640.49 = 2,658.41/x
  3. Step 3: Cross multiply
    4,811.88x = 6,640.49 × 2,658.41
  4. Step 4: Simplify right side
    4,811.88x = 17,653,145.02
  5. Step 5: Solve for x
    x = 17,653,145.02/4,811.88
  6. Step 6: Final answer
    x = 3,668.66

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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.