Home / 3,917.12-5,400.96-3,586.64

Finding the Fourth Proportional to 3,917.12, 5,400.96 and 3,586.64

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Solution

The fourth proportional to 3,917.12, 5,400.96 and 3,586.64 is: 4,945.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.12 : 5,400.96 = 3,586.64 : x
  2. Step 2: Convert to fraction form
    3,917.12/5,400.96 = 3,586.64/x
  3. Step 3: Cross multiply
    3,917.12x = 5,400.96 × 3,586.64
  4. Step 4: Simplify right side
    3,917.12x = 19,371,299.17
  5. Step 5: Solve for x
    x = 19,371,299.17/3,917.12
  6. Step 6: Final answer
    x = 4,945.29

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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.