Home / 3,918.46-5,406-2,502.20

Finding the Fourth Proportional to 3,918.46, 5,406 and 2,502.20

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Solution

The fourth proportional to 3,918.46, 5,406 and 2,502.20 is: 3,452.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.46 : 5,406 = 2,502.20 : x
  2. Step 2: Convert to fraction form
    3,918.46/5,406 = 2,502.20/x
  3. Step 3: Cross multiply
    3,918.46x = 5,406 × 2,502.20
  4. Step 4: Simplify right side
    3,918.46x = 13,526,893.20
  5. Step 5: Solve for x
    x = 13,526,893.20/3,918.46
  6. Step 6: Final answer
    x = 3,452.09

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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.