Home / 2,382.56-3,286.88-1,438.08

Finding the Fourth Proportional to 2,382.56, 3,286.88 and 1,438.08

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Solution

The fourth proportional to 2,382.56, 3,286.88 and 1,438.08 is: 1,983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.56 : 3,286.88 = 1,438.08 : x
  2. Step 2: Convert to fraction form
    2,382.56/3,286.88 = 1,438.08/x
  3. Step 3: Cross multiply
    2,382.56x = 3,286.88 × 1,438.08
  4. Step 4: Simplify right side
    2,382.56x = 4,726,796.39
  5. Step 5: Solve for x
    x = 4,726,796.39/2,382.56
  6. Step 6: Final answer
    x = 1,983.91

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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.