Home / 2,382.03-3,287.41-1,387.40

Finding the Fourth Proportional to 2,382.03, 3,287.41 and 1,387.40

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Solution

The fourth proportional to 2,382.03, 3,287.41 and 1,387.40 is: 1,914.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.03 : 3,287.41 = 1,387.40 : x
  2. Step 2: Convert to fraction form
    2,382.03/3,287.41 = 1,387.40/x
  3. Step 3: Cross multiply
    2,382.03x = 3,287.41 × 1,387.40
  4. Step 4: Simplify right side
    2,382.03x = 4,560,964.37
  5. Step 5: Solve for x
    x = 4,560,964.37/2,382.03
  6. Step 6: Final answer
    x = 1,914.74

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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.