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Finding the Fourth Proportional to 3,998.92, 5,518.92 and 2,508

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Solution

The fourth proportional to 3,998.92, 5,518.92 and 2,508 is: 3,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.92 : 5,518.92 = 2,508 : x
  2. Step 2: Convert to fraction form
    3,998.92/5,518.92 = 2,508/x
  3. Step 3: Cross multiply
    3,998.92x = 5,518.92 × 2,508
  4. Step 4: Simplify right side
    3,998.92x = 13,841,451.36
  5. Step 5: Solve for x
    x = 13,841,451.36/3,998.92
  6. Step 6: Final answer
    x = 3,461.30

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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.