Home / 3,917.64-5,874.84-1,665.21

Finding the Fourth Proportional to 3,917.64, 5,874.84 and 1,665.21

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Solution

The fourth proportional to 3,917.64, 5,874.84 and 1,665.21 is: 2,497.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.64 : 5,874.84 = 1,665.21 : x
  2. Step 2: Convert to fraction form
    3,917.64/5,874.84 = 1,665.21/x
  3. Step 3: Cross multiply
    3,917.64x = 5,874.84 × 1,665.21
  4. Step 4: Simplify right side
    3,917.64x = 9,782,842.32
  5. Step 5: Solve for x
    x = 9,782,842.32/3,917.64
  6. Step 6: Final answer
    x = 2,497.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.