Home / 3,999.89-5,519.16-2,320.91

Finding the Fourth Proportional to 3,999.89, 5,519.16 and 2,320.91

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Solution

The fourth proportional to 3,999.89, 5,519.16 and 2,320.91 is: 3,202.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.89 : 5,519.16 = 2,320.91 : x
  2. Step 2: Convert to fraction form
    3,999.89/5,519.16 = 2,320.91/x
  3. Step 3: Cross multiply
    3,999.89x = 5,519.16 × 2,320.91
  4. Step 4: Simplify right side
    3,999.89x = 12,809,496.14
  5. Step 5: Solve for x
    x = 12,809,496.14/3,999.89
  6. Step 6: Final answer
    x = 3,202.46

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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.