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Finding the Fourth Proportional to 7,186.03, 9,917.24 and 3,999.58

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Solution

The fourth proportional to 7,186.03, 9,917.24 and 3,999.58 is: 5,519.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.03 : 9,917.24 = 3,999.58 : x
  2. Step 2: Convert to fraction form
    7,186.03/9,917.24 = 3,999.58/x
  3. Step 3: Cross multiply
    7,186.03x = 9,917.24 × 3,999.58
  4. Step 4: Simplify right side
    7,186.03x = 39,664,749.97
  5. Step 5: Solve for x
    x = 39,664,749.97/7,186.03
  6. Step 6: Final answer
    x = 5,519.70

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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.