Home / 3,989.03-5,504.59-2,220.59

Finding the Fourth Proportional to 3,989.03, 5,504.59 and 2,220.59

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Solution

The fourth proportional to 3,989.03, 5,504.59 and 2,220.59 is: 3,064.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.03 : 5,504.59 = 2,220.59 : x
  2. Step 2: Convert to fraction form
    3,989.03/5,504.59 = 2,220.59/x
  3. Step 3: Cross multiply
    3,989.03x = 5,504.59 × 2,220.59
  4. Step 4: Simplify right side
    3,989.03x = 12,223,454.05
  5. Step 5: Solve for x
    x = 12,223,454.05/3,989.03
  6. Step 6: Final answer
    x = 3,064.27

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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.