Home / 3,917.76-5,409.32-3,175.08

Finding the Fourth Proportional to 3,917.76, 5,409.32 and 3,175.08

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Solution

The fourth proportional to 3,917.76, 5,409.32 and 3,175.08 is: 4,383.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.76 : 5,409.32 = 3,175.08 : x
  2. Step 2: Convert to fraction form
    3,917.76/5,409.32 = 3,175.08/x
  3. Step 3: Cross multiply
    3,917.76x = 5,409.32 × 3,175.08
  4. Step 4: Simplify right side
    3,917.76x = 17,175,023.75
  5. Step 5: Solve for x
    x = 17,175,023.75/3,917.76
  6. Step 6: Final answer
    x = 4,383.89

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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.