Home / 3,911.42-5,394.89-2,849.51

Finding the Fourth Proportional to 3,911.42, 5,394.89 and 2,849.51

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Solution

The fourth proportional to 3,911.42, 5,394.89 and 2,849.51 is: 3,930.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.42 : 5,394.89 = 2,849.51 : x
  2. Step 2: Convert to fraction form
    3,911.42/5,394.89 = 2,849.51/x
  3. Step 3: Cross multiply
    3,911.42x = 5,394.89 × 2,849.51
  4. Step 4: Simplify right side
    3,911.42x = 15,372,813.61
  5. Step 5: Solve for x
    x = 15,372,813.61/3,911.42
  6. Step 6: Final answer
    x = 3,930.24

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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.