Home / 3,998.18-5,518.91-2,635.56

Finding the Fourth Proportional to 3,998.18, 5,518.91 and 2,635.56

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Solution

The fourth proportional to 3,998.18, 5,518.91 and 2,635.56 is: 3,638.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.18 : 5,518.91 = 2,635.56 : x
  2. Step 2: Convert to fraction form
    3,998.18/5,518.91 = 2,635.56/x
  3. Step 3: Cross multiply
    3,998.18x = 5,518.91 × 2,635.56
  4. Step 4: Simplify right side
    3,998.18x = 14,545,425.03
  5. Step 5: Solve for x
    x = 14,545,425.03/3,998.18
  6. Step 6: Final answer
    x = 3,638.01

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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.