Home / 3,891.45-5,372.16-2,476.56

Finding the Fourth Proportional to 3,891.45, 5,372.16 and 2,476.56

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Solution

The fourth proportional to 3,891.45, 5,372.16 and 2,476.56 is: 3,418.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.45 : 5,372.16 = 2,476.56 : x
  2. Step 2: Convert to fraction form
    3,891.45/5,372.16 = 2,476.56/x
  3. Step 3: Cross multiply
    3,891.45x = 5,372.16 × 2,476.56
  4. Step 4: Simplify right side
    3,891.45x = 13,304,476.57
  5. Step 5: Solve for x
    x = 13,304,476.57/3,891.45
  6. Step 6: Final answer
    x = 3,418.90

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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.