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Finding the Fourth Proportional to 3,137.84, 4,329.91 and 1,811.97

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Solution

The fourth proportional to 3,137.84, 4,329.91 and 1,811.97 is: 2,500.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.84 : 4,329.91 = 1,811.97 : x
  2. Step 2: Convert to fraction form
    3,137.84/4,329.91 = 1,811.97/x
  3. Step 3: Cross multiply
    3,137.84x = 4,329.91 × 1,811.97
  4. Step 4: Simplify right side
    3,137.84x = 7,845,659.10
  5. Step 5: Solve for x
    x = 7,845,659.10/3,137.84
  6. Step 6: Final answer
    x = 2,500.34

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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.