Home / 3,998.61-5,518.09-2,230.33

Finding the Fourth Proportional to 3,998.61, 5,518.09 and 2,230.33

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Solution

The fourth proportional to 3,998.61, 5,518.09 and 2,230.33 is: 3,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.61 : 5,518.09 = 2,230.33 : x
  2. Step 2: Convert to fraction form
    3,998.61/5,518.09 = 2,230.33/x
  3. Step 3: Cross multiply
    3,998.61x = 5,518.09 × 2,230.33
  4. Step 4: Simplify right side
    3,998.61x = 12,307,140.21
  5. Step 5: Solve for x
    x = 12,307,140.21/3,998.61
  6. Step 6: Final answer
    x = 3,077.86

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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.