Home / 3,853.46-5,318.31-2,857.16

Finding the Fourth Proportional to 3,853.46, 5,318.31 and 2,857.16

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Solution

The fourth proportional to 3,853.46, 5,318.31 and 2,857.16 is: 3,943.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.46 : 5,318.31 = 2,857.16 : x
  2. Step 2: Convert to fraction form
    3,853.46/5,318.31 = 2,857.16/x
  3. Step 3: Cross multiply
    3,853.46x = 5,318.31 × 2,857.16
  4. Step 4: Simplify right side
    3,853.46x = 15,195,236.01
  5. Step 5: Solve for x
    x = 15,195,236.01/3,853.46
  6. Step 6: Final answer
    x = 3,943.28

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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.