Home / 3,998.86-5,518.50-2,320.36

Finding the Fourth Proportional to 3,998.86, 5,518.50 and 2,320.36

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Solution

The fourth proportional to 3,998.86, 5,518.50 and 2,320.36 is: 3,202.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.86 : 5,518.50 = 2,320.36 : x
  2. Step 2: Convert to fraction form
    3,998.86/5,518.50 = 2,320.36/x
  3. Step 3: Cross multiply
    3,998.86x = 5,518.50 × 2,320.36
  4. Step 4: Simplify right side
    3,998.86x = 12,804,906.66
  5. Step 5: Solve for x
    x = 12,804,906.66/3,998.86
  6. Step 6: Final answer
    x = 3,202.14

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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.