Home / 3,999.75-5,518.44-3,160.59

Finding the Fourth Proportional to 3,999.75, 5,518.44 and 3,160.59

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Solution

The fourth proportional to 3,999.75, 5,518.44 and 3,160.59 is: 4,360.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.75 : 5,518.44 = 3,160.59 : x
  2. Step 2: Convert to fraction form
    3,999.75/5,518.44 = 3,160.59/x
  3. Step 3: Cross multiply
    3,999.75x = 5,518.44 × 3,160.59
  4. Step 4: Simplify right side
    3,999.75x = 17,441,526.28
  5. Step 5: Solve for x
    x = 17,441,526.28/3,999.75
  6. Step 6: Final answer
    x = 4,360.65

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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.